WO2023070916A1

WO2023070916A1 - Method for eliminating occlusion effect of earphone, and earphone

Info

Publication number: WO2023070916A1
Application number: PCT/CN2021/140668
Authority: WO
Inventors: 赵玉贵
Original assignee: 歌尔科技有限公司
Priority date: 2021-10-27
Filing date: 2021-12-23
Publication date: 2023-05-04
Also published as: CN113873388A

Abstract

Disclosed in the present invention are a method for eliminating an occlusion effect of an earphone, and an earphone. The earphone is provided with a vibrator which is tightly attached to an external ear canal wall. The method for eliminating an occlusion effect of an earphone comprises the following steps: measuring a vibration frequency and a vibration amplitude of an external ear canal wall, and generating a corresponding external ear canal wall vibration signal; performing low-pass filtering processing on the external ear canal wall vibration signal; and performing phase inversion processing on the external ear canal wall vibration signal which has been subjected to low-pass filtering processing, so as to obtain an occlusion effect elimination signal, and controlling a vibrator to vibrate according to the vibration amplitude and the vibration frequency which correspond to the occlusion effect elimination signal, so as to offset the vibration of the external ear canal wall. By means of the present invention, an occlusion effect of an earphone is eliminated, thereby improving the usage experience of a user.

Description

一种耳机闭塞效应消除方法及耳机Method for eliminating earphone occlusion effect and earphone

本申请要求于2021年10月27日提交中国专利局、申请号为202111258909.3、发明名称为“一种耳机闭塞效应消除方法及耳机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202111258909.3 and the title of the invention "A Method for Eliminating the Occlusion Effect of Earphones and Earphones" submitted to the China Patent Office on October 27, 2021, the entire contents of which are incorporated herein by reference. Applying.

技术领域technical field

本发明涉及耳机技术领域，特别涉及一种耳机闭塞效应消除方法及耳机。The invention relates to the technical field of earphones, in particular to an earphone occlusion effect elimination method and earphones.

背景技术Background technique

当今社会，随着生活水平的提高，耳机成为了人们生活的标配，人们对于耳机的音质，实用性以及佩戴的舒适性等提出了新的要求。但是，各类耳机在使用过程中，均会对佩戴者的耳道有着或多或少的遮挡或阻塞，特别是入耳式耳机，而这会导致闭塞效应(或者又称为堵耳效应)的产生，致使用户听阈降低。用户在佩戴耳机后，自己的咀嚼声、吞咽声、说话声和呼吸声等会经过骨传导导致外耳道壁振动，并且其中的低频部分会因为闭塞效应放大，所以会使用户觉得自己的咀嚼声、吞咽声、说话声和呼吸声等被放大了，甚至类似于回声，极为影响佩戴者的听觉感受。In today's society, with the improvement of living standards, earphones have become a standard configuration in people's lives, and people have put forward new requirements for the sound quality, practicability and wearing comfort of earphones. However, all kinds of earphones will more or less block or block the ear canal of the wearer during use, especially in-ear earphones, which will lead to the effect of occlusion effect (or also known as ear plugging effect). Generated, causing the user's hearing threshold to decrease. After the user wears the earphone, the sound of chewing, swallowing, talking and breathing will cause the wall of the external auditory canal to vibrate through bone conduction, and the low frequency part will be amplified due to the occlusion effect, so the user will feel that his chewing sound, Swallowing, speaking, and breathing sounds are amplified, even similar to echoes, which greatly affect the wearer's hearing experience.

发明内容Contents of the invention

本发明的主要目的是提供一种耳机闭塞效应消除方法及耳机，旨在消除耳机的闭塞效应，提高用户使用的体验感。The main purpose of the present invention is to provide a method for eliminating the occlusion effect of earphones and earphones, aiming at eliminating the occlusion effect of earphones and improving user experience.

为实现上述目的，本发明提出一种耳机闭塞效应消除方法，所述耳机设置有紧贴外耳道壁的振动器，所述耳机闭塞效应消除方法包括：In order to achieve the above object, the present invention proposes a method for eliminating the earphone occlusion effect. The earphone is provided with a vibrator that is close to the wall of the external auditory canal. The method for eliminating the earphone occlusion effect includes:

检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号；Detect the vibration frequency and vibration amplitude of the wall of the external auditory canal, and generate corresponding vibration signals of the wall of the external auditory canal;

将所述外耳道壁振动信号进行低通滤波处理；performing low-pass filtering on the external auditory canal wall vibration signal;

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。Inverting the vibration signal of the wall of the external auditory canal after low-pass filtering to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and frequency corresponding to the occlusion effect elimination signal, so as to cancel the vibration of the external auditory canal wall.

可选的，所述检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号的步骤具体包括：Optionally, the step of detecting the vibration frequency and vibration amplitude of the wall of the external auditory canal, and generating a corresponding vibration signal of the wall of the external auditory canal specifically includes:

检测外耳道壁不同位置的振动频率和振动幅值，并获得多个相应的外耳道壁振动信号；Detect the vibration frequency and vibration amplitude at different positions of the wall of the external auditory canal, and obtain multiple corresponding vibration signals of the wall of the external auditory canal;

根据多个所述外耳道壁振动信号以及每个所述外耳道壁振动信号对应的预设权重比，计算生成相应的所述外耳道壁振动信号。The corresponding external auditory canal wall vibration signal is calculated and generated according to the multiple external auditory canal wall vibration signals and the preset weight ratio corresponding to each external auditory canal wall vibration signal.

可选的，在执行所述将所述外耳道壁振动信号进行低通滤波处理的步骤之前，所述闭塞效应消除方法还包括：Optionally, before performing the step of performing low-pass filtering on the external auditory canal wall vibration signal, the method for eliminating occlusion effect further includes:

设置预设补偿系数，按照所述预设补偿系数对所述外耳道壁振动信号进行信号补偿处理。A preset compensation coefficient is set, and signal compensation processing is performed on the external auditory canal wall vibration signal according to the preset compensation coefficient.

可选的，所述耳机还设置有扬声器、外麦克风和内麦克风，在执行所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，所述闭塞效应消除方法还包括：Optionally, the earphone is also provided with a loudspeaker, an external microphone and an internal microphone. After performing the low-pass filtering process, the external auditory canal wall vibration signal is subjected to phase inversion processing to obtain an occlusion effect elimination signal, and the vibrator is controlled in accordance with the Before the step of vibrating the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset the vibration of the wall of the external auditory canal, the occlusion effect elimination method also includes:

获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号；Obtain the external audio picked up by the external microphone, and output the corresponding external audio reference signal;

所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤具体为：Inverting the vibration signal of the external auditory canal wall processed by the low-pass filter to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, so as to offset the vibration of the external auditory canal wall. The vibration steps are as follows:

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号；Inverting the external auditory canal wall vibration signal processed by low-pass filtering to obtain an occlusion effect elimination signal;

控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动并将所述外部音频参考信号通过所述扬声器播放；controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the external audio reference signal through the speaker;

获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将所述外部音频参考信号和所述内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Obtaining the internal audio in the ear canal picked up by the internal microphone, and outputting a corresponding internal audio signal, after performing differential processing on the external audio reference signal and the internal audio signal, outputting a corresponding occlusion effect residual signal;

根据所述闭塞效应残留信号，调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。According to the occlusion effect residual signal, adjust the parameters of the occlusion effect elimination signal until the amplitude of the occlusion effect residual signal is zero.

可选的，所述获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号的步骤具体包括：Optionally, the step of acquiring the external audio picked up by the external microphone and outputting a corresponding external audio reference signal specifically includes:

获取外麦克风拾取的外部音频，并输出相应的外部音频信号；Obtain the external audio picked up by the external microphone and output the corresponding external audio signal;

将所述外部音频信号进行高通滤波处理后输出所述外部音频参考信号。and outputting the external audio reference signal after performing high-pass filter processing on the external audio signal.

可选的，所述耳机还设置有外麦克风和内麦克风、扬声器，在执行所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，所述闭塞效应消除方法还包括：Optionally, the earphone is also provided with an external microphone, an internal microphone, and a speaker. After the low-pass filtering process, the external auditory canal wall vibration signal is subjected to phase inversion processing to obtain an occlusion effect elimination signal, and the vibrator is controlled according to the Before the step of vibrating the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset the vibration of the wall of the external auditory canal, the occlusion effect elimination method also includes:

接收外部终端发来的用户音频信号；Receive user audio signals sent by external terminals;

控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动并将所述用户音频信号通过所述扬声器播放；controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the user audio signal through the speaker;

获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将所述用户音频信号和所述内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Obtaining the internal audio in the ear canal picked up by the internal microphone, and outputting a corresponding internal audio signal, after performing differential processing on the user audio signal and the internal audio signal, outputting a corresponding occlusion effect residual signal;

本发明还提出一种耳机，所述耳机包括：The present invention also proposes an earphone, and the earphone includes:

壳体；case;

频率检测传感器，所述频率检测传感器设置于所述壳体内，并对应设置在所述壳体贴近外耳道壁的位置，所述频率检测传感器用于检测外耳道壁的振动频率，并输出对应的外耳道壁振动频率检测信号；A frequency detection sensor, the frequency detection sensor is arranged in the housing, and correspondingly arranged at a position where the housing is close to the wall of the external auditory canal, the frequency detection sensor is used to detect the vibration frequency of the wall of the external auditory canal, and output the corresponding Vibration frequency detection signal;

振幅传感器，所述振幅传感器设置所述表面内，并紧贴所述外耳道壁设置，所述振幅传感器用于检测外耳道壁的振动幅值，并输出对应的外耳道壁振动幅值检测信号；An amplitude sensor, the amplitude sensor is arranged in the surface and arranged close to the wall of the external auditory canal, the amplitude sensor is used to detect the vibration amplitude of the wall of the external auditory canal, and output a corresponding detection signal of the vibration amplitude of the wall of the external auditory canal;

第二控制模块，所述第二控制模块分别与所述振幅传感器的输出端和所述频率检测传感器的输出端电连接，并用于根据所述外耳道壁振动频率检测信号和所述外耳道壁振动幅值检测信号生成相应的外耳道壁振动信号；A second control module, the second control module is electrically connected to the output end of the amplitude sensor and the output end of the frequency detection sensor, and is used to detect the signal according to the vibration frequency of the wall of the external auditory canal and the vibration amplitude of the wall of the external auditory canal The value detection signal generates a corresponding external auditory canal wall vibration signal;

振动器，所述振动器设置于所述壳体表面，并紧贴所述外耳道壁设置；a vibrator, the vibrator is arranged on the surface of the shell and is arranged close to the wall of the external auditory canal;

低通滤波器，所述低通滤波器的输入端与所述第二控制模块的输出端连接；a low-pass filter, the input end of the low-pass filter is connected to the output end of the second control module;

所述低通滤波器用于将所述外耳道壁振动信号进行低通滤波处理后输出低频外耳道壁振动信号；The low-pass filter is used to low-pass filter the external auditory canal wall vibration signal to output a low-frequency external auditory canal wall vibration signal;

控制模块，所述控制模块分别与所述振动器和所述低通滤波器的输出端电连接；a control module, the control module is electrically connected to the output terminals of the vibrator and the low-pass filter;

所述控制模块，用于将所述低频外耳道壁振动信号进行反相处理后输出闭塞效应消除信号至所述振动器，以使所述振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。The control module is configured to invert the low-frequency external auditory canal wall vibration signal and output an occlusion effect elimination signal to the vibrator, so that the vibrator vibrates according to the vibration amplitude corresponding to the occlusion effect elimination signal And vibration frequency vibration to counteract the vibration of the external auditory canal wall.

可选的，所述第二控制模块还用于将生成的所述外耳道壁振动信息按照预设补偿系数进行补偿处理后再输出。Optionally, the second control module is further configured to perform compensation processing on the generated external auditory canal wall vibration information according to a preset compensation coefficient before outputting.

可选的，所述耳机还包括：Optionally, the earphone also includes:

外麦克风，所述外麦克风设置于耳外的所述壳体上，所述外麦克风，所述外麦克风用于拾取外部音频，并输出相应的外部音频信号；An external microphone, the external microphone is arranged on the shell outside the ear, the external microphone, the external microphone is used to pick up external audio and output a corresponding external audio signal;

内麦克风，所述内麦克风设置于耳内的所述壳体上，所述内麦克风与所述控制模块连接，所述内麦克风用于拾取耳道内的内部音频，并输出相应的内部音频信号；an inner microphone, the inner microphone is arranged on the housing in the ear, the inner microphone is connected to the control module, the inner microphone is used to pick up the internal audio in the ear canal, and output a corresponding internal audio signal;

高通滤波器，所述高通滤波器分别与所述外麦克风和所述控制模块电连接；a high-pass filter, the high-pass filter is electrically connected to the external microphone and the control module;

所述高通滤波器，用于将所述外部音频信号进行高通滤波处理后输出外部音频参考信号；The high-pass filter is used to output an external audio reference signal after performing high-pass filtering on the external audio signal;

扬声器，所述扬声器设置于所述壳体上，所述扬声器朝向耳道方向发声设置，所述扬声器与所述控制模块电连接；a loudspeaker, the loudspeaker is arranged on the housing, the loudspeaker is arranged to emit sound toward the ear canal, and the loudspeaker is electrically connected to the control module;

所述控制模块，还用于将所述外部音频参考信号输出至所述扬声器，并驱动所述扬声器播放所述外部音频参考信号；The control module is further configured to output the external audio reference signal to the speaker, and drive the speaker to play the external audio reference signal;

所述控制模块，还用于将所述外部音频参考信号和所述内部音频信号进行作差处理后，根据作差处理的结果调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。The control module is further configured to perform difference processing on the external audio reference signal and the internal audio signal, and adjust the parameters of the blocking effect elimination signal according to the result of the difference processing until the blocking effect residual signal magnitude is zero.

可选的，所述耳机还包括：Optionally, the earphone also includes:

通讯模块，通讯模块与所述控制模块电连接，所述通讯模块用于与所述外部终端通讯连接，所述通讯模块还用于接入所述外部终端发来的用户音频信号；A communication module, the communication module is electrically connected to the control module, the communication module is used to communicate with the external terminal, and the communication module is also used to access the user audio signal sent by the external terminal;

所述控制模块，还用于将所述用户音频信号输出至所述扬声器，并驱动所述扬声器播放所述用户音频信号；The control module is further configured to output the user audio signal to the speaker, and drive the speaker to play the user audio signal;

所述控制模块，还用于将所述用户音频信号和所述内部音频信号进行作差处理后，根据作差处理的结果调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。The control module is further configured to adjust the parameters of the occlusion effect elimination signal according to the result of the difference processing after the user audio signal and the internal audio signal are processed until the residual signal of the occlusion effect Amplitude is zero.

本发明技术方案中，先检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号，再将外耳道壁振动信号进行低通滤波处理，然后将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。如此，在实际应用中，外耳道壁的低频振动会与振动器产生的振动相互抵消，从而不会在耳道内产生闭塞效应信号，即低频的声音，也就不会使用户听到被自己放大的咀嚼声、吞咽声和呼吸声，从而在根源上消除了耳机的闭塞效应，提高了用户使用耳机的体验感。In the technical solution of the present invention, the vibration frequency and vibration amplitude of the wall of the external auditory canal are detected first, and corresponding vibration signals of the wall of the external auditory canal are generated, and then the vibration signal of the wall of the external auditory canal is subjected to low-pass filtering processing, and then the vibration of the wall of the external auditory canal after the low-pass filtering is processed The signal is inverted to obtain an occlusion effect elimination signal, and the vibrator is controlled to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, so as to offset the vibration of the wall of the external auditory canal. In this way, in practical applications, the low-frequency vibration of the wall of the external auditory canal and the vibration generated by the vibrator will cancel each other out, so that no occlusion effect signal, that is, low-frequency sound, will be generated in the ear canal, and the user will not hear the sound amplified by himself. The sound of chewing, swallowing and breathing eliminates the occlusion effect of the earphone at the root and improves the user's experience of using the earphone.

附图说明Description of drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

图1为本发明耳机闭塞效应消除方法一实施例的方法步骤流程图；Fig. 1 is the flow chart of the method steps of an embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图2为本发明耳机闭塞效应消除方法另一实施例的方法步骤流程图；Fig. 2 is the flow chart of the method steps of another embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图3为本发明耳机闭塞效应消除方法另一实施例的方法步骤流程图；Fig. 3 is a flow chart of the method steps of another embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图4为本发明耳机闭塞效应消除方法另一实施例的方法步骤流程图；4 is a flow chart of method steps in another embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图5为本发明耳机闭塞效应消除方法另一实施例的方法步骤流程图；5 is a flow chart of method steps in another embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图6为本发明耳机闭塞效应消除方法另一实施例的方法步骤流程图；6 is a flow chart of method steps in another embodiment of the method for eliminating the earphone occlusion effect of the present invention;

图7为本发明耳机一实施例的电路示意图。Fig. 7 is a schematic circuit diagram of an embodiment of the earphone of the present invention.

附图标号说明：Explanation of reference numbers:

标号label	名称 name	标号label		名称name
1010	加速度计 Accelerometer	2020	扬声器 speaker
3030	低通滤波器 low pass filter	4040	控制模块 control module
5050	外麦克风 external microphone	6060	内麦克风 inner microphone
7070	高通滤波器 high pass filter	8080	通讯模块 communication module
9090	振动器vibrator	100100	振幅传感器 Amplitude sensor
110110	第二控制模块Second control module	the	the

本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

需要理解的是，外耳道壁因为骨传导传来声音而振动，当用户戴上耳机，特别是入耳式耳机时，会堵塞外耳道，导致耳道内的空间变小，空气不流通，导致闭塞效应发生。此时，外耳道振动的低频部分会因为闭塞效应产生闭塞信号，即低频的声音信号，从而使用户觉得自己的咀嚼声、吞咽声、说话声等放大了，极大地降低了用户使用的体验感。What needs to be understood is that the wall of the external auditory canal vibrates due to the sound transmitted by bone conduction. When the user wears earphones, especially in-ear earphones, the external auditory canal will be blocked, causing the space in the ear canal to become smaller and the air not to circulate, resulting in an occlusion effect. At this time, the low-frequency part of the vibration of the external auditory canal will generate an occlusion signal due to the occlusion effect, that is, a low-frequency sound signal, so that the user feels that his chewing, swallowing, speaking, etc. are amplified, which greatly reduces the user experience.

为此，本发明提出一种耳机闭塞效应消除方法，耳机设置有紧贴外耳道壁的振动器，在本发明一实施例中，参考图1，本发明提出一种耳机闭塞效应消除方法包括：For this reason, the present invention proposes a method for eliminating the earphone occlusion effect. The earphone is provided with a vibrator that is close to the wall of the external auditory canal. In an embodiment of the present invention, with reference to FIG. 1 , the present invention proposes a method for eliminating the earphone occlusion effect comprising:

步骤S100、检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号；Step S100, detecting the vibration frequency and vibration amplitude of the wall of the external auditory canal, and generating a corresponding vibration signal of the wall of the external auditory canal;

在本实施例中，耳机内可以设置有用于检测外耳道壁的振动频率的振动频率检测传感器，例如加速度计、位移传感器等，同时还可以设置有用于检测外耳道壁的振动幅值的振幅传感器，振幅传感器可以采用压力传感器来实现，例如陶瓷型压力传感器等。两种传感器均可以设置在耳机的外壳上并且紧贴设置，从而能够更加精确的检测外耳道壁的震动参数。耳机内还可以设置有一用于生成相应的外耳道壁振动信号的第二主控芯片，例如MCU、DSP(Digital Signal Process，数字信号处理芯片)、FPGA(Field Programmable Gate Array，可编程逻辑门阵列芯片)等，以根据振动频率检测传感传来的外耳道壁振动频率检测信号和振幅传感器传来的外耳道壁振动幅值检测信号确定外耳道壁振动的频率和振幅，并且输出相应的外耳道壁振动信号，外耳道壁振动信号的振幅和频率与外耳道壁的振动频率和幅值相同。In this embodiment, a vibration frequency detection sensor for detecting the vibration frequency of the wall of the external auditory canal, such as an accelerometer, a displacement sensor, etc., can be provided in the earphone, and an amplitude sensor for detecting the vibration amplitude of the wall of the external auditory canal can also be provided at the same time. The sensor can be implemented by a pressure sensor, such as a ceramic pressure sensor. Both sensors can be arranged on the shell of the earphone and closely attached, so that the vibration parameters of the wall of the external auditory canal can be detected more accurately. A second main control chip for generating corresponding external auditory canal wall vibration signals can also be arranged in the earphone, such as MCU, DSP (Digital Signal Process, digital signal processing chip), FPGA (Field Programmable Gate Array, programmable logic gate array chip) ), etc., determine the frequency and amplitude of the vibration of the wall of the external auditory canal with the vibration frequency detection signal of the wall of the external auditory canal transmitted by the vibration frequency detection sensor and the detection signal of the vibration amplitude of the wall of the external auditory canal transmitted by the amplitude sensor, and output the corresponding vibration signal of the external auditory canal wall, The amplitude and frequency of the vibration signal of the wall of the external auditory canal are the same as the vibration frequency and amplitude of the wall of the external auditory canal.

在本实施例中，两种传感器可以直接输出为数字信号的检测结果，也可以输出为模拟信号的检测结果，再通过第二主控芯片内集成的ADC转换模块转换为数字信号，以便于主控芯片进行处理和保存。In this embodiment, the two sensors can directly output the detection results as digital signals, or output the detection results as analog signals, and then convert them into digital signals through the ADC conversion module integrated in the second main control chip, so that the main Control chip for processing and saving.

步骤S200、将外耳道壁振动信号进行低通滤波处理；Step S200, performing low-pass filtering on the external auditory canal wall vibration signal;

需要理解的是，由于闭塞效应，多出现在1KHz以下频率，不会出现在高频段，并且不会出现高频的回响声音。What needs to be understood is that due to the occlusion effect, it mostly appears at frequencies below 1KHz, and does not appear in the high frequency band, and there will be no high frequency reverberation sound.

在本实施例中，可以通过在耳机内设置低通滤波器来实现对外耳道壁振动信号进行低通滤波。从而保证经过低通滤波处理后的外耳道壁振动信号的频率和振幅就是外耳道壁振动的低频部分的频率和振幅，两者频率、相位，振动幅值一致。如此，在后续的消除闭塞效应的过程中，只会针对容易产生闭塞效应的外耳道壁振动的低频部分，不会影响正常高频部分，即不会将传导至外耳道壁的有用的声音信号滤除掉。In this embodiment, the low-pass filtering of the vibration signal of the wall of the external auditory canal can be realized by setting a low-pass filter in the earphone. Therefore, it is ensured that the frequency and amplitude of the vibration signal of the wall of the external auditory canal after the low-pass filtering process is the frequency and amplitude of the low-frequency part of the vibration of the external auditory canal wall, and the frequencies, phases, and vibration amplitudes of the two are consistent. In this way, in the subsequent process of eliminating the occlusion effect, only the low-frequency part of the external auditory canal wall vibration that is prone to occlusion effect will be targeted, and the normal high-frequency part will not be affected, that is, the useful sound signal transmitted to the external auditory canal wall will not be filtered out Lose.

步骤S300、将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。Step S300, inverting the vibration signal of the wall of the external auditory canal after low-pass filtering to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, so as to offset the vibration of the external auditory canal wall .

在本实施例中，耳机中可以设置有控制模块，控制模块中采用ADC转换模块、DAC转换模块和第一主控芯片等来实现，控制模块可以将接收到的低通滤波处理后的外耳道壁振动信号经过进行反相处理，例如对低通滤波处理后的外耳道壁振动信号进行传递函数估计，增益以及传函反函数的计算，并最终输出与低通滤波处理后的外耳道壁振动信号相位完全相反，但是振幅、频率一致的闭塞效应消除信号，再将闭塞效应消除信号转换为模拟信号后，输出至紧贴外耳道壁设置的振动器，以使振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动。可以理解的是，振动器可以由激振器和振动小板来实现，通过激振器将点振动转换为面振动，增大振动的面积，从而实现更好的振动效果，振动小板的面积随耳机类型和表面积不同而改变。In this embodiment, the earphone may be provided with a control module, and the control module may be implemented by using an ADC conversion module, a DAC conversion module, and a first main control chip, etc., and the control module may receive the low-pass filtered external auditory canal wall The vibration signal is processed by inversion, such as the transfer function estimation, gain and inverse function calculation of the external auditory canal wall vibration signal processed by the low-pass filter, and the final output is completely in phase with the low-pass filter processed external auditory canal wall vibration signal. On the contrary, the occlusion effect elimination signal with the same amplitude and frequency is converted into an analog signal, and then output to the vibrator that is placed close to the wall of the external auditory canal, so that the vibrator will follow the vibration amplitude corresponding to the occlusion effect elimination signal. Value and vibration frequency to vibrate. It can be understood that the vibrator can be realized by a vibrator and a small vibrating plate. The point vibration is converted into surface vibration through the vibrator, and the area of vibration is increased to achieve a better vibration effect. The area of the small vibrating plate Varies with headset type and surface area.

此时，由上述实施例内容可知，外耳道壁振动的低频部分就是低通滤波处理后的外耳道壁振动信号。如此，在实际应用中，外耳道壁的低频振动会与振动器产生的振动相互抵消，从而不会在耳道内产生闭塞效应信号，即低频的声音，也就不会使用户听到被自己放大的咀嚼声、吞咽声和呼吸声，从而在根源上消除了耳机的闭塞效应，提高了用户使用耳机的体验感。At this time, it can be known from the above embodiments that the low-frequency part of the vibration of the wall of the external auditory canal is the vibration signal of the wall of the external auditory canal after low-pass filtering. In this way, in practical applications, the low-frequency vibration of the wall of the external auditory canal and the vibration generated by the vibrator will cancel each other out, so that no occlusion effect signal, that is, low-frequency sound, will be generated in the ear canal, and the user will not hear the sound amplified by himself. The sound of chewing, swallowing and breathing eliminates the occlusion effect of the earphone at the root and improves the user's experience of using the earphone.

在本发明一实施例中，参考图2，检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号的步骤具体包括：In an embodiment of the present invention, referring to FIG. 2 , the steps of detecting the vibration frequency and vibration amplitude of the wall of the external auditory canal and generating a corresponding vibration signal of the wall of the external auditory canal specifically include:

步骤S110、检测外耳道壁不同位置的振动频率和振动幅值，并获得多个相应的外耳道壁振动信号。Step S110 , detecting vibration frequencies and vibration amplitudes at different positions of the wall of the external auditory canal, and obtaining a plurality of corresponding vibration signals of the wall of the external auditory canal.

步骤S120、根据多个外耳道壁振动信号以及每个外耳道壁振动信号对应的预设权重比，计算生成相应的外耳道壁振动信号。Step S120: Calculate and generate corresponding external auditory canal wall vibration signals according to the plurality of external auditory canal wall vibration signals and the preset weight ratio corresponding to each external auditory canal wall vibration signal.

在本实施例中，耳机内的振动频率检测传感器和振幅传感器的数量均为多个，两类传感器中的每个传感器设置于外耳道壁的不同位置，从而检测外耳道壁不同位置的振动幅值和振动频率，以使第二主控芯片生成多个外耳道壁振动信号，再将每个外耳道壁振动信号乘以其对应的预设权重比后相加计算生成最终的外耳道壁振动信号。例如一共有三个检测位置，A位置的预设权重比为1/2，B位置的预设权重比为1/8，C位置的预设权重比为3/8，则将三个位置的加速度计输出的外耳道壁振动信号乘以其对应的预设权重比后相加计算生成最终的外耳道壁振动信号。In this embodiment, there are multiple vibration frequency detection sensors and amplitude sensors in the earphone, and each sensor in the two types of sensors is set at a different position on the wall of the external auditory canal, thereby detecting the vibration amplitude and amplitude at different positions of the external auditory canal wall. Vibration frequency, so that the second main control chip generates a plurality of vibration signals of the wall of the external auditory canal, and then multiplies each vibration signal of the wall of the external auditory canal by its corresponding preset weight ratio, and then adds and calculates to generate the final vibration signal of the wall of the external auditory canal. For example, there are three detection positions, the preset weight ratio of position A is 1/2, the preset weight ratio of position B is 1/8, and the preset weight ratio of position C is 3/8, then the three positions The external auditory canal wall vibration signal output by the accelerometer is multiplied by its corresponding preset weight ratio, and then added and calculated to generate the final external auditory canal wall vibration signal.

通过上述设置，能够有效地提高外耳道壁振动信号的精确性，从而能够提高闭塞效应信号抵消的准确性，更进一步消除了耳机的闭塞效应，提高了用户使用的体验感。Through the above configuration, the accuracy of the vibration signal of the wall of the external auditory canal can be effectively improved, thereby improving the accuracy of signal cancellation of the occlusion effect, further eliminating the occlusion effect of the earphone, and improving user experience.

需要理解的是，振动频率检测传感器和振幅传感器由于设置位置和检测误差的存在，会使第二主控芯片生成的外耳道壁振动信号的频率和振幅会和外耳道壁振动的实际参数产生一定的偏差。It should be understood that, due to the existence of the setting position and detection error of the vibration frequency detection sensor and the amplitude sensor, the frequency and amplitude of the external auditory canal wall vibration signal generated by the second main control chip will have a certain deviation from the actual parameters of the external auditory canal wall vibration .

参考图3，在本发明一实施例中，在执行将外耳道壁振动信号进行低通滤波处理的步骤之前，闭塞效应消除方法还包括：Referring to FIG. 3 , in an embodiment of the present invention, before performing the step of performing low-pass filtering on the vibration signal of the external auditory canal wall, the method for eliminating the occlusion effect further includes:

步骤S400、设置预设补偿系数，按照预设补偿系数对外耳道壁振动信号进行信号补偿处理。Step S400, setting a preset compensation coefficient, and performing signal compensation processing on the external auditory canal wall vibration signal according to the preset compensation coefficient.

在本实施例中，研发人员在研发过程中可以对需要使用的振动频率检测传感器和振幅传感器进行测试，比如采用人外耳道模型以及激振器进行测试，并将振动频率检测传感器和振幅传感器检测到的结果与激振器设定参数的结果进行比对，计算得出频率检测结果的误差百分比和振幅检测结果的误差百分比，并经过多次不同的设定参数进行测试后，获得预设补偿系数，预设补偿系数包括频率预设补偿系数和振幅预设补偿系数。In this embodiment, the research and development personnel can test the vibration frequency detection sensor and the amplitude sensor to be used during the research and development process, such as using the human external auditory canal model and the vibrator to test, and the vibration frequency detection sensor and the amplitude sensor are detected Comparing the result with the result of the setting parameters of the vibrator, the error percentage of the frequency detection result and the error percentage of the amplitude detection result are calculated, and after several tests with different setting parameters, the preset compensation coefficient is obtained , the preset compensation coefficients include frequency preset compensation coefficients and amplitude preset compensation coefficients.

在本实施例中，耳机中的第二主控芯片在生成了外耳道壁振动信号后，会根据频率预设补偿系数和振幅预设补偿系数对外耳道壁振动信号的振幅和振动频率进行增益放大后，再输出至低通滤波器进行滤波。如此，便能够防止一些原来属于高频的信号因为频率检测传感器检测误差导致被检测到的频率低于了低通滤波器的阈值，同时降低了振幅传感器对于振幅检测的误差，最终提高了控制模块输出至振动器的闭塞效应消除信号的精确性。In this embodiment, after the second main control chip in the earphone generates the vibration signal of the wall of the external auditory canal, the amplitude and vibration frequency of the vibration signal of the external auditory canal wall will be amplified according to the frequency preset compensation coefficient and the amplitude preset compensation coefficient. , and then output to a low-pass filter for filtering. In this way, it can prevent some signals originally belonging to high frequency from being detected by the frequency detection sensor error and the detected frequency is lower than the threshold of the low-pass filter. At the same time, the error of the amplitude sensor for amplitude detection is reduced, and finally the control module is improved. Accuracy of the occlusion cancellation signal output to the vibrator.

通过上述方法，实现了消除因振动频率检测传感器和振幅传感器的检测位置和检测误差所带来的检测结果的误差，从而提高了闭塞效应消除信号的准确性，更进一步消除了耳机的闭塞效应，提高了用户使用的体验感。Through the above method, the error of the detection result caused by the detection position and detection error of the vibration frequency detection sensor and the amplitude sensor is eliminated, thereby improving the accuracy of the occlusion effect elimination signal, and further eliminating the occlusion effect of the earphone. Improve user experience.

参考图4，在本发明一实施例中，耳机还设置有扬声器、外麦克风和内麦克风，在执行所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，所述闭塞效应消除方法还包括：Referring to FIG. 4 , in an embodiment of the present invention, the earphone is also provided with a speaker, an external microphone and an internal microphone, and after performing the inversion processing of the external auditory canal wall vibration signal processed by the low-pass filter to obtain the occlusion effect elimination signal, and Before the step of controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset the vibration of the wall of the external auditory canal, the occlusion effect elimination method further includes:

步骤S600、获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号；Step S600, acquiring external audio picked up by an external microphone, and outputting a corresponding external audio reference signal;

在本实施例中，外麦克风设置于耳朵外侧的耳机的外壳上，用于拾取外部音频，例如环境音、人话音等等，并输出相应的外部音频参考信号，再将耳机内的通过ADC转换模块，将输出的外部音频信号从模拟信号转换为数字信号。In this embodiment, the external microphone is set on the earphone shell outside the ear, and is used to pick up external audio, such as ambient sound, human voice, etc., and output a corresponding external audio reference signal, and then convert the audio in the earphone through ADC Module to convert the output external audio signal from analog signal to digital signal.

在另一实施例中，参考图5，获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号的步骤具体包括：In another embodiment, referring to FIG. 5, the step of acquiring external audio picked up by an external microphone and outputting a corresponding external audio reference signal specifically includes:

步骤S610、获取外麦克风拾取的外部音频，并输出相应的外部音频信号。Step S610, acquiring external audio picked up by the external microphone, and outputting a corresponding external audio signal.

步骤S620、将外部音频信号进行高通滤波处理后输出外部音频参考信号。Step S620, outputting an external audio reference signal after performing high-pass filtering on the external audio signal.

在本实施例中，为了防止环境噪音对用户体验的影响，还可以将转换为数字信号的外部音频信号经过高通滤波器后输出外部音频参考信号，从而防止用户受到外部的噪音干扰。In this embodiment, in order to prevent the impact of environmental noise on user experience, the external audio signal converted into a digital signal may also be output as an external audio reference signal after passing through a high-pass filter, thereby preventing the user from being disturbed by external noise.

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤具体为：The vibration signal of the wall of the external auditory canal after the low-pass filtering process is reversed to obtain the signal for eliminating the occlusion effect, and the vibrator is controlled to vibrate according to the vibration amplitude and frequency corresponding to the signal for eliminating the occlusion effect, so as to cancel the vibration of the wall of the external auditory canal. for:

步骤S310、将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号；Step S310, inverting the external auditory canal wall vibration signal processed by the low-pass filter to obtain an occlusion effect elimination signal;

步骤S320、控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动并将外部音频参考信号通过扬声器播放；Step S320, controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the external audio reference signal through the speaker;

步骤S330、获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将外部音频参考信号和内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Step S330, obtaining the internal audio in the ear canal picked up by the internal microphone, and outputting the corresponding internal audio signal, after performing differential processing on the external audio reference signal and the internal audio signal, outputting the corresponding occlusion effect residual signal;

步骤S340、根据闭塞效应残留信号，调整闭塞效应消除信号的参数，直至闭塞效应残留信号的幅值为零值。Step S340 , according to the residual signal of the blocking effect, adjust the parameters of the signal for eliminating the blocking effect until the amplitude of the residual signal of the blocking effect is zero.

在本实施例中，耳机中的控制模块会将高通滤波器输出的外部音频参考信号转换为模拟信号输出至扬声器，并且驱动扬声器开始播放，此时，设置于耳机的壳体上并位于外耳道内的内麦克风便会拾取外耳道内的内部音频，并输出内部音频信号，控制模块会将内部音频信号从模拟信号转换为数字信号后，再与外部音频参考信号进行作差处理。In this embodiment, the control module in the earphone converts the external audio reference signal output by the high-pass filter into an analog signal and outputs it to the speaker, and drives the speaker to start playing. The internal microphone in the microphone will pick up the internal audio in the external auditory canal and output the internal audio signal. The control module will convert the internal audio signal from an analog signal to a digital signal, and then perform differential processing with the external audio reference signal.

若外耳道壁振动的低频部分被振动器的振动完全抵消，那么闭塞效应产生的闭塞效应信号就不会产生，即消除了闭塞效应，则内麦克风拾取到的内部音频信号，应该就只剩下由扬声器播放的外部音频参考信号，则转换为数字信号的内部音频信号与控制模块中存储的转换为数字信号的外部音频参考信号作差的结果应该为零值，即闭塞效应残留信号的幅值应该为0。If the low-frequency part of the vibration of the external auditory canal wall is completely canceled by the vibration of the vibrator, then the occlusion effect signal generated by the occlusion effect will not be generated, that is, the occlusion effect is eliminated, and the internal audio signal picked up by the inner microphone should only be left. The external audio reference signal played by the speaker, the result of the difference between the internal audio signal converted to a digital signal and the external audio reference signal converted to a digital signal stored in the control module should be zero, that is, the amplitude of the residual signal of the occlusion effect should be is 0.

若闭塞效应残留信号的幅值不为零值，即产生了闭塞效应残留信号，则说明上述实施例中，控制模块在对低通滤波处理后的外耳道壁振动信号进行反相处理的过程中，存在了计算误差和处理误差，或者是振动器自身所产生的振动误差，此时控制模块会根据闭塞效应残留信号对低通滤波处理后的外耳道壁振动信号进行反相处理的过程中的部分参数进行修改，例如调整传递函数的参数、调整增益参数、调整补偿参数等，从而最终调整输出的闭塞效应消除信号的频率、相位与振动幅值，以使得振动器在按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动时，能够完全抵消外耳道壁振动的低频部分，从而实现消除闭塞效应。If the amplitude of the residual signal of the occlusion effect is not zero, that is, the residual signal of the occlusion effect is generated, then in the above embodiment, the control module performs inversion processing on the external auditory canal wall vibration signal processed by the low-pass filter, There are calculation errors and processing errors, or vibration errors generated by the vibrator itself. At this time, the control module will invert some parameters in the process of inverting the vibration signal of the external auditory canal wall after low-pass filtering according to the residual signal of the occlusion effect. Make modifications, such as adjusting the parameters of the transfer function, adjusting the gain parameters, adjusting the compensation parameters, etc., so as to finally adjust the frequency, phase and vibration amplitude of the output occlusion effect elimination signal, so that the vibrator is in accordance with the occlusion effect elimination signal When the corresponding vibration amplitude and vibration frequency vibrate, the low-frequency part of the vibration of the wall of the external auditory canal can be completely offset, thereby realizing the elimination of the occlusion effect.

通过上述设置，实现了闭塞效应消除的负反馈，更进一步的提高了闭塞效应消除信号的准确性。实现了完全消除耳机的闭塞效应，更进一步提高了用户使用的体验感。Through the above configuration, the negative feedback of the elimination of the occlusion effect is realized, and the accuracy of the signal of the elimination of the occlusion effect is further improved. The occlusion effect of the earphone is completely eliminated, which further improves the user experience.

在本发明另一实施例中，参考图6，在执行将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，闭塞效应消除方法还包括：In another embodiment of the present invention, with reference to Fig. 6, after the low-pass filtering process, the external auditory canal wall vibration signal is subjected to inversion processing to obtain the occlusion effect elimination signal, and the vibrator is controlled according to the vibration amplitude corresponding to the occlusion effect elimination signal. Before the step of vibrating the value and vibration frequency to counteract the vibration of the wall of the external auditory canal, the occlusion effect elimination method also includes:

步骤S700、接收外部终端发来的用户音频信号；Step S700, receiving a user audio signal sent by an external terminal;

步骤S350、将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号；Step S350, performing inversion processing on the external auditory canal wall vibration signal processed by the low-pass filter to obtain an occlusion effect elimination signal;

步骤S360、控制振动器按照与闭塞效应消除信号对应的振动幅值和振动频率振动并将用户音频信号通过扬声器播放；Step S360, controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the user audio signal through the speaker;

步骤S370、获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将用户音频信号和内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Step S370, acquiring the internal audio in the ear canal picked up by the internal microphone, and outputting a corresponding internal audio signal, and outputting a corresponding occlusion effect residual signal after performing differential processing on the user audio signal and the internal audio signal;

步骤S380、根据闭塞效应残留信号，调整闭塞效应消除信号的参数，直至闭塞效应残留信号的幅值为零值。Step S380 , according to the residual signal of the blocking effect, adjust the parameters of the signal for eliminating the blocking effect until the amplitude of the residual signal of the blocking effect is zero.

在本实施例中，在实际应用中，耳机一般会通过与外部终端无线或者有线连接建立通讯，用户可以在外部终端例如手机上进行操作，以使外部终端输出用户音频信号至耳机，使耳机播放用户所点播的音乐，或者是通过耳机播放他人的语音内容。由于播放出来的用户音频信号不会导致外耳道壁振动，所以便可以直接将用户音频信号转换为模拟信号后，由扬声器进行播放，并与上述实施例实时过程同理，将内麦克风拾取到的内部音频信号转换为数字信号后与用户音频信号进行作差处理。In this embodiment, in practical applications, the headset generally establishes communication with an external terminal through a wireless or wired connection, and the user can perform operations on the external terminal such as a mobile phone, so that the external terminal outputs user audio signals to the headset, and the headset plays The music ordered by the user, or other people's voice content played through the headset. Since the played user audio signal will not cause the wall of the external auditory canal to vibrate, the user audio signal can be directly converted into an analog signal and then played by the speaker. Similar to the real-time process of the above-mentioned embodiment, the internal microphone picked up After the audio signal is converted into a digital signal, it is processed as a difference with the user's audio signal.

若外耳道壁振动的低频部分被振动器的振动完全抵消，那么闭塞效应产生的闭塞效应信号就不会产生，即消除了闭塞效应，则内麦克风拾取到的内部音频信号，应该就只剩下由扬声器播放的用户音频信号，则转换为数字信号的内部音频信号与控制模块中存储的转换为数字信号的用户音频信号作差的结果应该为零值，即闭塞效应残留信号的幅值应该为0。If the low-frequency part of the vibration of the external auditory canal wall is completely canceled by the vibration of the vibrator, then the occlusion effect signal generated by the occlusion effect will not be generated, that is, the occlusion effect is eliminated, and the internal audio signal picked up by the inner microphone should only be left. For the user audio signal played by the speaker, the result of the difference between the internal audio signal converted into a digital signal and the user audio signal converted into a digital signal stored in the control module should be zero, that is, the amplitude of the residual signal of the occlusion effect should be 0 .

通过上述设置，不仅仅能够在用户佩戴但不使用耳机时，实现闭塞效应消除的负反馈，还能够在用户佩戴并使用耳机进行播放音乐和语音等信息时，实现闭塞效应消除的负反馈，更进一步的提高了闭塞效应消除信号的准确性。完全满足用户的日常使用需要，提高了用户使用的便利性和体验感。Through the above settings, not only can the negative feedback of eliminating the occlusion effect be realized when the user wears but does not use the earphone, but also the negative feedback of the elimination of the occlusion effect can be realized when the user wears and uses the earphone to play music and voice information, and more Further improve the accuracy of the occlusion effect elimination signal. It fully meets the daily needs of users, and improves the convenience and experience of users.

本发明还提出了一种耳机，参考图7，耳机包括：The present invention also proposes an earphone. Referring to FIG. 7, the earphone includes:

壳体；case;

频率检测传感器10，频率检测传感器10设置于壳体内，并对应设置在壳体贴近外耳道壁的位置，频率检测传感器10用于检测外耳道壁的振动频率，并输出对应的外耳道壁振动频率检测信号；A frequency detection sensor 10, the frequency detection sensor 10 is arranged in the housing, and correspondingly arranged at a position where the housing is close to the wall of the external auditory canal, the frequency detection sensor 10 is used to detect the vibration frequency of the external auditory canal wall, and output a corresponding external auditory canal wall vibration frequency detection signal;

振幅传感器100，振幅传感器100设置表面内，并紧贴外耳道壁设置，振幅传感器100用于检测外耳道壁的振动幅值，并输出对应的外耳道壁振动幅值检测信号；The amplitude sensor 100, the amplitude sensor 100 is arranged on the surface, and is arranged close to the wall of the external auditory canal, the amplitude sensor 100 is used to detect the vibration amplitude of the wall of the external auditory canal, and output the corresponding detection signal of the vibration amplitude of the wall of the external auditory canal;

第二控制模块110，第二控制模块110分别与振幅传感器100的输出端和频率检测传感器10的输出端电连接，并用于根据外耳道壁振动频率检测信号和外耳道壁振动幅值检测信号生成相应的外耳道壁振动信号；The second control module 110, the second control module 110 is electrically connected with the output end of the amplitude sensor 100 and the output end of the frequency detection sensor 10 respectively, and is used for generating corresponding Vibration signals of the wall of the external auditory canal;

振动器90，振动器90设置于壳体表面，并紧贴外耳道壁设置；A vibrator 90, the vibrator 90 is set on the surface of the shell and is set close to the wall of the external auditory canal;

低通滤波器30，低通滤波器30的输入端与第二控制模块110的输出端连接；A low-pass filter 30, the input end of the low-pass filter 30 is connected to the output end of the second control module 110;

低通滤波器30用于将外耳道壁振动信号进行低通滤波处理后输出低频外耳道壁振动信号；The low-pass filter 30 is used to low-pass filter the external auditory canal wall vibration signal to output a low-frequency external auditory canal wall vibration signal;

控制模块40，控制模块40分别与振动器90和低通滤波器30的输出端电连接；A control module 40, the control module 40 is electrically connected to the output end of the vibrator 90 and the low-pass filter 30 respectively;

控制模块40，用于将低频外耳道壁振动信号进行反相处理后输出闭塞效应消除信号至振动器90，以使振动器90按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。The control module 40 is used to invert the low-frequency external auditory canal wall vibration signal and output the occlusion effect elimination signal to the vibrator 90, so that the vibrator 90 vibrates according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset Vibration of the wall of the external auditory canal.

在本实施例中，控制模块40可以包括ADC转换模块、DAC转换模块和与两者电连接的主控芯片来实现，主控芯片可以选用MCU、DSP(Digital Signal Process，数字信号处理芯片)、FPGA(Field Programmable Gate Array，可编程逻辑门阵列芯片)等。同理，第二控制模块也可以采用上述主控芯片来实现。在本实施例中，为了便于对信号进行处理，可以使用DSP作为主控芯片，ADC转换模块、DAC转换模块可以实现将模拟信号转换为数字信号，或者是将数字信号转换为模拟信号。In this embodiment, the control module 40 can include an ADC conversion module, a DAC conversion module and a main control chip electrically connected to the two to realize, and the main control chip can be selected from MCU, DSP (Digital Signal Process, digital signal processing chip), FPGA (Field Programmable Gate Array, programmable logic gate array chip), etc. Similarly, the second control module can also be implemented by using the above-mentioned main control chip. In this embodiment, in order to facilitate signal processing, DSP can be used as the main control chip, and the ADC conversion module and DAC conversion module can convert analog signals into digital signals, or convert digital signals into analog signals.

在本实施例中，频率检测传感器10可以采用加速度计、位移传感器等来实现，以用于检测外耳道壁的振动频率并输出对应的外耳道壁振动频率检测信号至第二控制模块110，振幅传感器110可以采用压力传感器，例如陶瓷型压力传感器来实现，以用于检测外耳道壁的振动幅值并输出对应的外耳道壁振动幅值检测信号至第二控制模块110。第二控制模块110中的主控芯片会根据上述的外耳道壁振动频率检测信号和外耳道壁振动幅值检测信号，确定外耳道壁振动的频率和振幅，并且输出相应的外耳道壁振动信号至低通滤波器30，低通滤波器30再对接收到的外耳道壁振动信号进行低通滤波处理后输出低频外耳道壁振动信号，低频外耳道壁振动信号就是外耳道壁振动的低频部分，两者相位相同，频率、振动幅值也相同。在本实施例中，通过采用两组传感器分别检测外耳道壁的振动参数，能够有效地提高检测的精确性，进而提高闭塞效应消除的效果。In this embodiment, the frequency detection sensor 10 can be realized by using an accelerometer, a displacement sensor, etc., to detect the vibration frequency of the wall of the external auditory canal and output a corresponding detection signal of the vibration frequency of the wall of the external auditory canal to the second control module 110. The amplitude sensor 110 It can be implemented by using a pressure sensor, such as a ceramic pressure sensor, to detect the vibration amplitude of the wall of the external auditory canal and output a corresponding detection signal of the vibration amplitude of the wall of the external auditory canal to the second control module 110 . The main control chip in the second control module 110 will determine the frequency and amplitude of the external auditory canal wall vibration according to the above-mentioned external auditory canal wall vibration frequency detection signal and external auditory canal wall vibration amplitude detection signal, and output the corresponding external auditory canal wall vibration signal to the low-pass filter device 30, and the low-pass filter 30 performs low-pass filtering on the received external auditory canal wall vibration signal to output a low-frequency external auditory canal wall vibration signal. The low-frequency external auditory canal wall vibration signal is the low-frequency part of the external auditory canal wall vibration. The phases of the two are the same. The vibration amplitude is also the same. In this embodiment, by using two sets of sensors to respectively detect the vibration parameters of the wall of the external auditory canal, the detection accuracy can be effectively improved, and the effect of eliminating the occlusion effect can be further improved.

在本实施例中，频率检测传感器的数量为多个，振幅传感器的数量为多个，并且分布在外耳道壁的不同位置，每个位置可以设置一个频率检测传感器和一个振幅传感器，以检测外耳道壁不同位置的振动幅值和振动频率，第二控制模块相应生成多个外耳道壁振动信号，并且可以根据每个位置对应的外耳道壁振动信号预设权重比，将每个外耳道壁振动信号乘以对应的预设权重比后再相加合成最终的低频外耳道壁振动信号。如此，便能够有效地低频外耳道壁振动信号检测的准确性，进而提高闭塞效应消除信号的精确性。In this embodiment, there are multiple frequency detection sensors and multiple amplitude sensors, and they are distributed at different positions on the wall of the external auditory canal. Each position can be provided with a frequency detection sensor and an amplitude sensor to detect the external auditory canal wall. The second control module generates a plurality of external auditory canal wall vibration signals corresponding to the vibration amplitude and vibration frequency at different positions, and can multiply each external auditory canal wall vibration signal by the corresponding The preset weight ratios are added together to synthesize the final low-frequency external auditory canal wall vibration signal. In this way, the detection accuracy of the low-frequency external auditory canal wall vibration signal can be effectively improved, thereby improving the accuracy of the occlusion effect elimination signal.

在本实施例中，为了便于对低频外耳道壁振动信号进行反相处理，会先将低频外耳道壁振动信号经过控制模块40中的ADC转换模块转换为数字信号输出至第一模块的主控芯片，此外，降低电路板的布线面积，还可以将ADC转换模块和DAC转换模块集成在主控芯片中。主控芯片会将接收到的低频外耳道壁振动信号进行反相处理，例如对低频外耳道壁振动信号进行传递函数估计，增益以及传函反函数的计算等，并最终输出与低频外耳道壁振动信号相位完全相反，但是频率、振动幅值一致的闭塞效应消除信号，并将闭塞效应消除信号转换为模拟信号后输出至振动器90，以使振动器90按照与闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。此时，外耳道壁振动的低频部分就是低频外耳道壁振动信号。如此，在实际应用中，外耳道壁的低频振动会与振动器产生的振动相互抵消，从而不会在耳道内产生闭塞效应信号，即低频的声音，也就不会使用户听到被自己放大的咀嚼声、吞咽声和呼吸声，从而在根源上消除了耳机的闭塞效应，提高了用户使用耳机的体验感。In this embodiment, in order to facilitate the inversion processing of the low-frequency external auditory canal wall vibration signal, the low-frequency external auditory canal wall vibration signal will first be converted into a digital signal by the ADC conversion module in the control module 40 and output to the main control chip of the first module. In addition, the wiring area of the circuit board can be reduced, and the ADC conversion module and the DAC conversion module can also be integrated in the main control chip. The main control chip will invert the received low-frequency external auditory canal wall vibration signal, such as performing transfer function estimation on the low-frequency external auditory canal wall vibration signal, gain and calculation of the inverse function of the transfer function, etc., and finally output the phase of the low-frequency external auditory canal wall vibration signal. Completely opposite, but the occlusion effect elimination signal with the same frequency and vibration amplitude, and the occlusion effect elimination signal is converted into an analog signal and then output to the vibrator 90, so that the vibrator 90 can follow the vibration amplitude and vibration amplitude corresponding to the occlusion effect elimination signal The vibration frequency vibrates to counteract the vibration of the wall of the external auditory canal. At this time, the low-frequency part of the vibration of the wall of the external auditory canal is the low-frequency vibration signal of the wall of the external auditory canal. In this way, in practical applications, the low-frequency vibration of the wall of the external auditory canal and the vibration generated by the vibrator will cancel each other out, so that no occlusion effect signal, that is, low-frequency sound, will be generated in the ear canal, and the user will not hear the sound amplified by himself. The sound of chewing, swallowing and breathing eliminates the occlusion effect of the earphone at the root and improves the user's experience of using the earphone.

值得注意的是，由于本发明耳机基于上述的耳机闭塞效应消除方法，因此，本发明耳机的实施例包括上述耳机闭塞效应消除方法全部实施例的全部技术方案，且所达到的技术效果也完全相同，在此不再赘述。It is worth noting that since the earphone of the present invention is based on the above-mentioned method for eliminating the earphone occlusion effect, the embodiments of the earphone of the present invention include all the technical solutions of all the embodiments of the above-mentioned earphone occlusion effect elimination method, and the achieved technical effects are also exactly the same , which will not be repeated here.

在本发明一实施例中，第二控制模块110还用于将生成的外耳道壁振动信息按照预设补偿系数进行补偿后再输出。In an embodiment of the present invention, the second control module 110 is further configured to compensate the generated external auditory canal wall vibration information according to a preset compensation coefficient before outputting it.

需要理解的是，振动频率检测传感器和振幅传感器由于设置的检测位置和自身传感器检测误差，可能会导致第二控制模块110最终生成的外耳道壁振动信号的频率和振幅与外耳道壁振动的实际参数产生一定的偏差。It should be understood that the frequency and amplitude of the external auditory canal wall vibration signal finally generated by the second control module 110 may differ from the actual parameters of the external auditory canal wall vibration due to the set detection positions of the vibration frequency detection sensor and the amplitude sensor and their own sensor detection errors. Certain deviations.

在本实施例中，第二控制模块110在生成外耳道壁振动信号后，会再按照预设补偿系数对外耳道壁振动信号进行补偿处理后再输出至低通滤波器，如此，便能够防止一些原来属于高频的信号因为频率检测传感器检测误差导致被检测到的频率低于了低通滤波器的阈值，同时降低了振幅传感器对于振幅检测的误差，以及补偿了因两组传感器设置位置所导致的检测结果误差，最终提高了控制模块输出至振动器的闭塞效应消除信号的精确性。其中，预设补偿系数为研发人员根据实验获得并行预设在第二控制模块110中，预设补偿系数包括频率预设补偿系数和振幅预设补偿系数。In this embodiment, after the second control module 110 generates the vibration signal of the wall of the external auditory canal, it will perform compensation processing on the vibration signal of the wall of the external auditory canal according to the preset compensation coefficient and then output it to the low-pass filter. In this way, some original The detected frequency of the high-frequency signal is lower than the threshold of the low-pass filter due to the detection error of the frequency detection sensor, and at the same time reduces the error of the amplitude sensor for amplitude detection and compensates for the error caused by the setting positions of the two sets of sensors. The detection result error finally improves the accuracy of the occlusion effect elimination signal output from the control module to the vibrator. Wherein, the preset compensation coefficients are obtained by R&D personnel according to experiments and preset in parallel in the second control module 110, and the preset compensation coefficients include frequency preset compensation coefficients and amplitude preset compensation coefficients.

通过上述方法，实现了消除因振动频率检测传感器和振幅传感器的检测位置和检测误差所带来的检测结果的偏差，从而提高了闭塞效应消除信号的准确性，更进一步消除了耳机的闭塞效应，提高了用户使用的体验感。Through the above method, the deviation of the detection result caused by the detection position and detection error of the vibration frequency detection sensor and the amplitude sensor is eliminated, thereby improving the accuracy of the occlusion effect elimination signal, and further eliminating the occlusion effect of the earphone. Improve user experience.

参考图7，在本发明一实施例中，耳机还包括：Referring to FIG. 7, in an embodiment of the present invention, the headset further includes:

外麦克风50，外麦克风50设置于耳外的壳体上，外麦克风50，外麦克风50用于拾取外部音频，并输出相应的外部音频信号。The external microphone 50 is arranged on the housing outside the ear, and the external microphone 50 is used to pick up external audio and output corresponding external audio signals.

内麦克风60，内麦克风60设置于耳内的壳体上，内麦克风60与控制模块40连接，内麦克风60用于拾取耳道内的内部音频，并输出相应的内部音频信号。The inner microphone 60 is arranged on the shell in the ear, and the inner microphone 60 is connected with the control module 40. The inner microphone 60 is used to pick up the internal audio in the ear canal and output the corresponding internal audio signal.

高通滤波器70，高通滤波器70分别与外麦克风50和控制模块40电连接。The high-pass filter 70 is electrically connected to the external microphone 50 and the control module 40 respectively.

高通滤波器70，用于将外部音频信号进行高通滤波处理后输出外部音频参考信号。The high-pass filter 70 is configured to perform high-pass filtering on the external audio signal and output an external audio reference signal.

扬声器20，扬声器20设置于壳体上，扬声器20朝向耳道方向发声设置，扬声器20与控制模块40电连接；The speaker 20, the speaker 20 is arranged on the casing, the speaker 20 is arranged to emit sound toward the ear canal, and the speaker 20 is electrically connected to the control module 40;

控制模块40，还用于将外部音频参考信号与闭塞效应消除信号叠加输出至扬声器20，并驱动扬声器20播放叠加后的外部音频参考信号与闭塞效应消除信号。The control module 40 is further configured to superimpose and output the external audio reference signal and the occlusion elimination signal to the speaker 20, and drive the speaker 20 to play the superimposed external audio reference signal and the occlusion elimination signal.

控制模块40，还用于将叠加后的外部音频参考信号与闭塞效应消除信号和内部音频信号进行作差处理后，根据作差处理的结果调整闭塞效应消除信号的参数，直至闭塞效应残留信号的幅值为零值。The control module 40 is also used to perform difference processing on the superimposed external audio reference signal, the occlusion effect elimination signal and the internal audio signal, and adjust the parameters of the occlusion effect elimination signal according to the result of the difference processing until the occlusion effect residual signal Amplitude is zero.

在本实施例中，外麦克风50设置于耳朵外侧的耳机的外壳上，用于拾取外部音频，例如环境音、人话音等等，并输出相应的外部音频信号，再将外部音频信号经过高通滤波器70进行高通滤波后输出外部音频参考信号。其中，高通滤波的截止值可以用研发人员进行多次测试获得。如此，便能够防止环境音的噪声进入耳机内，防止用户受到外部噪音的干扰。In this embodiment, the external microphone 50 is arranged on the shell of the earphone outside the ear, and is used to pick up external audio, such as ambient sound, human voice, etc., and output a corresponding external audio signal, and then the external audio signal is subjected to high-pass filtering The device 70 outputs an external audio reference signal after high-pass filtering. Among them, the cut-off value of the high-pass filter can be obtained by multiple tests conducted by the R&D personnel. In this way, the noise of the ambient sound can be prevented from entering the earphone, and the user can be prevented from being disturbed by external noise.

在本实施例中，高通滤波器70输出的外部音频参考信号会经过控制模块40中的ADC转换模块转换为数字信号后，输出至控制模块40中的第一主控芯片，第一主控芯片将高通滤波器70输出的外部音频参考信号转换为模拟信号输出至扬声器20，并且驱动扬声器20开始播放，以使扬声器播放外部音频参考信号。同时，内麦克风60会拾取外耳道内的内部音频，并且输出相应的内部音频信号，控制模块40会将内部音频信号从模拟信号转换为数字信号后，再与外部音频参考信号进行作差处理，并输出相应的闭塞效应残留信号。In this embodiment, the external audio reference signal output by the high-pass filter 70 will be converted into a digital signal by the ADC conversion module in the control module 40, and then output to the first main control chip in the control module 40, the first main control chip The external audio reference signal output by the high-pass filter 70 is converted into an analog signal and output to the speaker 20, and the speaker 20 is driven to start playing, so that the speaker plays the external audio reference signal. At the same time, the internal microphone 60 will pick up the internal audio in the external auditory canal, and output a corresponding internal audio signal, and the control module 40 will convert the internal audio signal from an analog signal to a digital signal, and then perform differential processing with the external audio reference signal, and The corresponding occlusion effect residual signal is output.

此时，若外耳道壁振动的低频部分被振动器的振动完全抵消，那么闭塞效应产生的闭塞效应信号就不会产生，即消除了闭塞效应，则内麦克风60拾取到的内部音频信号，应该就只剩下由扬声器播放的外部音频参考信号，则转换为数字信号的内部音频信号与控制模块40中存储的转换为数字信号的外部音频参考信号作差的结果应该为零值，即闭塞效应残留信号的幅值应该为0。At this time, if the low-frequency part of the external auditory canal wall vibration is completely canceled by the vibration of the vibrator, the occlusion effect signal generated by the occlusion effect will not be generated, that is, the occlusion effect is eliminated, and the internal audio signal picked up by the inner microphone 60 should be just Only the external audio reference signal played by the loudspeaker is left, and the result of the difference between the internal audio signal converted into a digital signal and the external audio reference signal converted into a digital signal stored in the control module 40 should be zero, that is, the occlusion effect remains The amplitude of the signal should be 0.

若闭塞效应残留信号的幅值不为零值，即产生了闭塞效应残留信号，则说明上述实施例中，控制模块40在对低通滤波处理后的外耳道壁振动信号进行反相处理的过程中，存在了计算误差和处理误差，或者是振动器自身所产生的振动误差，此时控制模块40会根据闭塞效应残留信号对低频外耳道壁振动信号进行反相处理的过程中的部分参数进行修改，例如调整传递函数的参数、调整增益参数、调整补偿参数等，从而最终调整输出的闭塞效应消除信号的频率、相位与振动幅值，以使得振动器90在按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动时，能够完全抵消外耳道壁振动的低频部分，从而实现消除闭塞效应。If the amplitude of the residual signal of the occlusion effect is not zero, that is, the residual signal of the occlusion effect is generated, then in the above embodiment, the control module 40 performs inverting processing on the external auditory canal wall vibration signal processed by the low-pass filter. , there are calculation errors and processing errors, or vibration errors generated by the vibrator itself, at this time, the control module 40 will modify some parameters in the process of inverting the low-frequency external auditory canal wall vibration signal according to the residual signal of the occlusion effect, For example, adjust the parameters of the transfer function, adjust the gain parameters, adjust the compensation parameters, etc., so as to finally adjust the frequency, phase and vibration amplitude of the output occlusion effect elimination signal, so that the vibrator 90 operates according to the corresponding frequency of the occlusion effect elimination signal. When the vibration amplitude and vibration frequency vibrate, the low-frequency part of the vibration of the wall of the external auditory canal can be completely offset, thereby eliminating the occlusion effect.

通讯模块80，通讯模块80与控制模块40电连接，通讯模块80用于与外部终端通讯连接，通讯模块80还用于接入外部终端发来的用户音频信号。The communication module 80 is electrically connected to the control module 40, the communication module 80 is used for communication connection with the external terminal, and the communication module 80 is also used for accessing the user audio signal sent by the external terminal.

控制模块40，还用于将用户音频信号输出至扬声器20，并驱动扬声器20播放用户音频信号；The control module 40 is also used to output the user audio signal to the speaker 20, and drive the speaker 20 to play the user audio signal;

控制模块40，还用于将用户音频信号与内部音频信号进行作差处理后，根据作差处理的结果调整闭塞效应消除信号的参数，直至闭塞效应残留信号的幅值为零值。The control module 40 is further configured to perform difference processing on the user audio signal and the internal audio signal, and adjust parameters of the occlusion effect elimination signal according to the result of the difference processing until the amplitude of the occlusion effect residual signal is zero.

在本实施例中，通讯模块80可以通过有线通讯线例如CAN通讯线、RS-485通讯线、RS233通讯线等与外部终端建立有线通讯连接，例如有线入耳式耳机。同时，通讯模块80还可以通过无线通讯网络例如WIFI、蓝牙、4G/5G等与外部终端建立通讯连接，例如无线入耳式耳机。In this embodiment, the communication module 80 can establish a wired communication connection with an external terminal, such as a wired earphone, through a wired communication line such as a CAN communication line, an RS-485 communication line, or an RS233 communication line. At the same time, the communication module 80 can also establish a communication connection with an external terminal, such as a wireless earphone, through a wireless communication network such as WIFI, Bluetooth, 4G/5G, and the like.

在本实施例中，用户可以在外部终端例如手机上进行操作，以使外部终端输出用户音频信号经通讯模块80至耳机，使耳机播放用户所点播的音乐，或者是通过耳机播放他人的语音内容。由于播放出来的用户音频信号不会导致外耳道壁振动，所以控制模块40便可以直接将用户音频信号转换为模拟信号后输出至扬声器，由扬声器进行播放，并与上述实施例实时过程同理，将内麦克风60拾取到的内部音频信号转换为数字信号后与用户音频信号进行作差处理。In this embodiment, the user can operate on an external terminal such as a mobile phone, so that the external terminal outputs the user's audio signal to the earphone through the communication module 80, so that the earphone can play the music ordered by the user, or play other people's voice content through the earphone . Since the played user audio signal will not cause the wall of the external auditory canal to vibrate, the control module 40 can directly convert the user audio signal into an analog signal and then output it to the speaker for playback, and it is similar to the real-time process of the above-mentioned embodiment. The internal audio signal picked up by the internal microphone 60 is converted into a digital signal for differential processing with the user audio signal.

若外耳道壁振动的低频部分被振动器的振动完全抵消，那么闭塞效应产生的闭塞效应信号就不会产生，即消除了闭塞效应，则内麦克风60拾取到的内部音频信号，应该就只剩下由扬声器播放的用户音频信号，则转换为数字信号的内部音频信号与控制模块40中存储的转换为数字信号的用户音频信号作差的结果应该为零值，即闭塞效应残留信号的幅值应该为0。If the low-frequency part of the vibration of the external auditory canal wall is completely canceled by the vibration of the vibrator, then the occlusion effect signal generated by the occlusion effect will not be generated, that is, the occlusion effect is eliminated, and the internal audio signal picked up by the inner microphone 60 should only be left For the user audio signal played by the loudspeaker, the result of the difference between the internal audio signal converted into a digital signal and the user audio signal converted into a digital signal stored in the control module 40 should be zero, that is, the amplitude of the residual signal of the occlusion effect should be is 0.

若闭塞效应残留信号的幅值不为零值，即产生了闭塞效应残留信号，则说明上述实施例中，控制模块40在对低通滤波处理后的外耳道壁振动信号进行反相处理的过程中，存在了计算误差和处理误差，此时控制模块40会根据闭塞效应残留信号对低频外耳道壁振动信号进行反相处理的过程中的部分参数进行修改，例如调整传递函数的参数、调整增益参数、调整补偿参数等，从而最终调整输出的闭塞效应消除信号的频率、相位与振动幅值，以使得振动器90在按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动时，能够完全抵消外耳道壁振动的低频部分，从而实现消除闭塞效应。If the amplitude of the residual signal of the occlusion effect is not zero, that is, the residual signal of the occlusion effect is generated, then in the above embodiment, the control module 40 performs inverting processing on the external auditory canal wall vibration signal processed by the low-pass filter. , there are calculation errors and processing errors. At this time, the control module 40 will modify some parameters in the process of inverting the low-frequency external auditory canal wall vibration signal according to the residual signal of the occlusion effect, such as adjusting the parameters of the transfer function, adjusting the gain parameters, Adjust the compensation parameters, etc., so as to finally adjust the frequency, phase and vibration amplitude of the output occlusion effect elimination signal, so that when the vibrator 90 vibrates according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, it can completely The low-frequency part of the vibration of the wall of the external auditory canal is counteracted, thereby eliminating the occlusion effect.

以上所述仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。The above descriptions are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect Application in other related technical fields is included in the patent protection scope of the present invention.

Claims

一种耳机闭塞效应消除方法，其特征在于，所述耳机设置有紧贴外耳道壁的振动器，所述耳机闭塞效应消除方法包括：A method for eliminating earphone occlusion effect, characterized in that the earphone is provided with a vibrator close to the wall of the external auditory canal, and the method for eliminating earphone occlusion effect comprises:

检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号；Detect the vibration frequency and vibration amplitude of the wall of the external auditory canal, and generate corresponding vibration signals of the wall of the external auditory canal;

将所述外耳道壁振动信号进行低通滤波处理；performing low-pass filtering on the external auditory canal wall vibration signal;

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。Inverting the vibration signal of the wall of the external auditory canal after low-pass filtering to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and frequency corresponding to the occlusion effect elimination signal, so as to cancel the vibration of the external auditory canal wall.
如权利要求1所述的耳机闭塞效应消除方法，其特征在于，所述检测外耳道壁的振动频率和振动幅值，并生成相应的外耳道壁振动信号的步骤具体包括：The method for eliminating earphone occlusion effect according to claim 1, wherein the step of detecting the vibration frequency and vibration amplitude of the wall of the external auditory canal and generating a corresponding vibration signal of the wall of the external auditory canal specifically comprises:

检测外耳道壁不同位置的振动频率和振动幅值，并获得多个相应的外耳道壁振动信号；Detect the vibration frequency and vibration amplitude at different positions of the wall of the external auditory canal, and obtain multiple corresponding vibration signals of the wall of the external auditory canal;

根据多个所述外耳道壁振动信号以及每个所述外耳道壁振动信号对应的预设权重比，计算生成相应的所述外耳道壁振动信号。The corresponding external auditory canal wall vibration signal is calculated and generated according to the multiple external auditory canal wall vibration signals and the preset weight ratio corresponding to each external auditory canal wall vibration signal.
如权利要求1所述的耳机闭塞效应消除方法，其特征在于，在执行所述将所述外耳道壁振动信号进行低通滤波处理的步骤之前，所述闭塞效应消除方法还包括：The method for eliminating the earphone occlusion effect according to claim 1, wherein before performing the step of performing low-pass filtering on the external auditory canal wall vibration signal, the method for eliminating the occlusion effect further comprises:

设置预设补偿系数，按照所述预设补偿系数对所述外耳道壁振动信号进行信号补偿处理。A preset compensation coefficient is set, and signal compensation processing is performed on the external auditory canal wall vibration signal according to the preset compensation coefficient.
如权利要求1所述的耳机闭塞效应消除方法，所述耳机还设置有扬声器、外麦克风和内麦克风，其特征在于，在执行所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，所述闭塞效应消除方法还包括：The earphone occlusion effect elimination method according to claim 1, said earphone is also provided with loudspeaker, external microphone and internal microphone, it is characterized in that, after performing said external auditory canal wall vibration signal processed by low-pass filtering, carry out phase inversion process Before the step of obtaining the occlusion effect elimination signal and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset the vibration of the wall of the external auditory canal, the occlusion effect elimination method further includes:

获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号；Obtain the external audio picked up by the external microphone, and output the corresponding external audio reference signal;

所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤具体为：Inverting the vibration signal of the external auditory canal wall processed by the low-pass filter to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, so as to offset the vibration of the external auditory canal wall. The vibration steps are as follows:

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号；Inverting the external auditory canal wall vibration signal processed by low-pass filtering to obtain an occlusion effect elimination signal;

控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动并将所述外部音频参考信号通过所述扬声器播放；controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the external audio reference signal through the speaker;

获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将所述外部音频参考信号和所述内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Obtaining the internal audio in the ear canal picked up by the internal microphone, and outputting a corresponding internal audio signal, after performing differential processing on the external audio reference signal and the internal audio signal, outputting a corresponding occlusion effect residual signal;

根据所述闭塞效应残留信号，调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。According to the occlusion effect residual signal, adjust the parameters of the occlusion effect elimination signal until the amplitude of the occlusion effect residual signal is zero.
如权利要求4所述的耳机闭塞效应消除方法，其特征在于，所述获取外麦克风拾取的外部音频，并输出相应的外部音频参考信号的步骤具体包括：The method for eliminating earphone occlusion effect according to claim 4, wherein the step of obtaining the external audio picked up by the external microphone and outputting a corresponding external audio reference signal specifically comprises:

获取外麦克风拾取的外部音频，并输出相应的外部音频信号；Obtain the external audio picked up by the external microphone and output the corresponding external audio signal;

将所述外部音频信号进行高通滤波处理后输出所述外部音频参考信号。and outputting the external audio reference signal after performing high-pass filter processing on the external audio signal.
如权利要求1所述的耳机闭塞效应消除方法，所述耳机还设置有外麦克风和内麦克风、扬声器，其特征在于，在执行所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤之前，所述闭塞效应消除方法还包括：The method for eliminating the earphone occlusion effect according to claim 1, the earphone is also provided with an external microphone, an internal microphone, and a loudspeaker, wherein the vibration signal of the external auditory canal wall after performing the low-pass filtering process is subjected to phase inversion processing Before the step of obtaining the occlusion effect elimination signal and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal to offset the vibration of the wall of the external auditory canal, the occlusion effect elimination method further includes:

接收外部终端发来的用户音频信号；Receive user audio signals sent by external terminals;

所述将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号，并控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动的步骤具体为：Inverting the vibration signal of the external auditory canal wall processed by the low-pass filter to obtain an occlusion effect elimination signal, and controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal, so as to offset the vibration of the external auditory canal wall. The vibration steps are as follows:

将低通滤波处理后的外耳道壁振动信号进行反相处理得到闭塞效应消除信号；The vibration signal of the wall of the external auditory canal after the low-pass filtering process is subjected to inversion processing to obtain an occlusion effect elimination signal;

控制振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动并将所述用户音频信号通过所述扬声器播放；controlling the vibrator to vibrate according to the vibration amplitude and vibration frequency corresponding to the occlusion effect elimination signal and playing the user audio signal through the speaker;

获取内麦克风拾取的耳道内的内部音频，并输出相应的内部音频信号，将所述用户音频信号和所述内部音频信号进行作差处理后，输出相应的闭塞效应残留信号；Obtaining the internal audio in the ear canal picked up by the internal microphone, and outputting a corresponding internal audio signal, after performing differential processing on the user audio signal and the internal audio signal, outputting a corresponding occlusion effect residual signal;

根据所述闭塞效应残留信号，调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。According to the occlusion effect residual signal, adjust the parameters of the occlusion effect elimination signal until the amplitude of the occlusion effect residual signal is zero.
一种耳机，其特征在于，所述耳机包括：A kind of earphone, is characterized in that, described earphone comprises:

壳体；case;

频率检测传感器，所述频率检测传感器设置于所述壳体内，并对应设置在所述壳体贴近外耳道壁的位置，所述频率检测传感器用于检测外耳道壁的振动频率，并输出对应的外耳道壁振动频率检测信号；A frequency detection sensor, the frequency detection sensor is arranged in the housing, and is correspondingly arranged at a position where the housing is close to the wall of the external auditory canal, and the frequency detection sensor is used to detect the vibration frequency of the wall of the external auditory canal, and output the corresponding Vibration frequency detection signal;

振幅传感器，所述振幅传感器设置所述表面内，并紧贴所述外耳道壁设置，所述振幅传感器用于检测外耳道壁的振动幅值，并输出对应的外耳道壁振动幅值检测信号；An amplitude sensor, the amplitude sensor is arranged in the surface and arranged close to the wall of the external auditory canal, the amplitude sensor is used to detect the vibration amplitude of the wall of the external auditory canal, and output a corresponding detection signal of the vibration amplitude of the wall of the external auditory canal;

第二控制模块，所述第二控制模块分别与所述振幅传感器的输出端和所述频率检测传感器的输出端电连接，并用于根据所述外耳道壁振动频率检测信号和所述外耳道壁振动幅值检测信号生成相应的外耳道壁振动信号；A second control module, the second control module is electrically connected to the output end of the amplitude sensor and the output end of the frequency detection sensor, and is used to detect the signal according to the vibration frequency of the wall of the external auditory canal and the vibration amplitude of the wall of the external auditory canal The value detection signal generates a corresponding external auditory canal wall vibration signal;

振动器，所述振动器设置于所述壳体表面，并紧贴所述外耳道壁设置；a vibrator, the vibrator is arranged on the surface of the shell and is arranged close to the wall of the external auditory canal;

低通滤波器，所述低通滤波器的输入端与所述第二控制模块的输出端连接；a low-pass filter, the input end of the low-pass filter is connected to the output end of the second control module;

所述低通滤波器用于将所述外耳道壁振动信号进行低通滤波处理后输出低频外耳道壁振动信号；The low-pass filter is used to low-pass filter the external auditory canal wall vibration signal to output a low-frequency external auditory canal wall vibration signal;

控制模块，所述控制模块分别与所述振动器和所述低通滤波器的输出端电连接；a control module, the control module is electrically connected to the output terminals of the vibrator and the low-pass filter;

所述控制模块，用于将所述低频外耳道壁振动信号进行反相处理后输出闭塞效应消除信号至所述振动器，以使所述振动器按照与所述闭塞效应消除信号对应的振动幅值和振动频率振动，以抵消外耳道壁的振动。The control module is configured to invert the low-frequency external auditory canal wall vibration signal and output an occlusion effect elimination signal to the vibrator, so that the vibrator vibrates according to the vibration amplitude corresponding to the occlusion effect elimination signal And vibration frequency vibration to counteract the vibration of the wall of the external auditory canal.
如权利要求7所述的耳机，其特征在于，所述第二控制模块还用于将生成的所述外耳道壁振动信息按照预设补偿系数进行补偿处理后再输出。The earphone according to claim 7, wherein the second control module is further configured to perform compensation processing on the generated external auditory canal wall vibration information according to a preset compensation coefficient before outputting.
如权利要求7所述的耳机，其特征在于，所述耳机还包括：The earphone according to claim 7, wherein the earphone further comprises:

外麦克风，所述外麦克风设置于耳外的所述壳体上，所述外麦克风，所述外麦克风用于拾取外部音频，并输出相应的外部音频信号；An external microphone, the external microphone is arranged on the shell outside the ear, the external microphone, the external microphone is used to pick up external audio and output a corresponding external audio signal;

内麦克风，所述内麦克风设置于耳内的所述壳体上，所述内麦克风与所述控制模块连接，所述内麦克风用于拾取耳道内的内部音频，并输出相应的内部音频信号；An inner microphone, the inner microphone is arranged on the housing in the ear, the inner microphone is connected to the control module, the inner microphone is used to pick up the internal audio in the ear canal, and output a corresponding internal audio signal;

高通滤波器，所述高通滤波器分别与所述外麦克风和所述控制模块电连接；a high-pass filter, the high-pass filter is electrically connected to the external microphone and the control module;

所述高通滤波器，用于将所述外部音频信号进行高通滤波处理后输出外部音频参考信号；The high-pass filter is used to output an external audio reference signal after performing high-pass filtering on the external audio signal;

扬声器，所述扬声器设置于所述壳体上，所述扬声器朝向耳道方向发声设置，所述扬声器与所述控制模块电连接；a loudspeaker, the loudspeaker is arranged on the housing, the loudspeaker is arranged to emit sound toward the ear canal, and the loudspeaker is electrically connected to the control module;

所述控制模块，还用于将所述外部音频参考信号输出至所述扬声器，并驱动所述扬声器播放所述外部音频参考信号；The control module is further configured to output the external audio reference signal to the speaker, and drive the speaker to play the external audio reference signal;

所述控制模块，还用于将所述外部音频参考信号和所述内部音频信号进行作差处理后，根据作差处理的结果调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。The control module is further configured to adjust the parameters of the occlusion effect elimination signal according to the result of the difference processing after the external audio reference signal and the internal audio signal are processed until the occlusion effect residual signal magnitude is zero.
如权利要求9所述的耳机，其特征在于，所述耳机还包括：The earphone according to claim 9, wherein the earphone further comprises:

通讯模块，通讯模块与所述控制模块电连接，所述通讯模块用于与所述外部终端通讯连接，所述通讯模块还用于接入所述外部终端发来的用户音频信号；A communication module, the communication module is electrically connected to the control module, the communication module is used to communicate with the external terminal, and the communication module is also used to access the user audio signal sent by the external terminal;

所述控制模块，还用于将所述用户音频信号输出至所述扬声器，并驱动所述扬声器播放所述用户音频信号；The control module is further configured to output the user audio signal to the speaker, and drive the speaker to play the user audio signal;

所述控制模块，还用于将所述用户音频信号和所述内部音频信号进行作差处理后，根据作差处理的结果调整所述闭塞效应消除信号的参数，直至所述闭塞效应残留信号的幅值为零值。The control module is further configured to adjust the parameters of the occlusion effect elimination signal according to the result of the difference processing after the user audio signal and the internal audio signal are processed until the residual signal of the occlusion effect Amplitude is zero.