WO2022206049A1 - 音频信号处理方法、装置、设备及存储介质 - Google Patents

音频信号处理方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022206049A1
WO2022206049A1 PCT/CN2021/139542 CN2021139542W WO2022206049A1 WO 2022206049 A1 WO2022206049 A1 WO 2022206049A1 CN 2021139542 W CN2021139542 W CN 2021139542W WO 2022206049 A1 WO2022206049 A1 WO 2022206049A1
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Prior art keywords
audio signal
signal
bone conduction
working state
amplification gain
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PCT/CN2021/139542
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English (en)
French (fr)
Inventor
张恒生
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歌尔股份有限公司
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Priority to US18/553,208 priority Critical patent/US20240187799A1/en
Publication of WO2022206049A1 publication Critical patent/WO2022206049A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/609—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of circuitry
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

Definitions

  • the present invention relates to the technical field of signal processing, and more particularly, to an audio signal processing method, apparatus, device and storage medium.
  • a hearing aid is a tool that helps the human ear hear. It is a device that increases the intensity of sound and can help some people with hearing impairments make full use of their residual hearing, thereby compensating for deaf hearing loss. As a hearing rehabilitation method, it cannot restore the hearing of the hearing-impaired patient to normal, but it can amplify the sound to the level that the patient can hear, and help the hearing-impaired patient to communicate better with others.
  • some hearing aid wearers feel that the sound they make is abnormal when they speak when the hearing aid is turned on. This is because hearing aids not only amplify other people's speech, but also the wearer's own voice. Because the microphone of the hearing aid is closer to the wearer's mouth, even if the sound of the same sound pressure is used to speak, the hearing aid wearer hears that his voice is louder than others, and has a feeling of amplification. It is different from the way people usually feel the self-speaking sound through bone conduction, which will cause the wearer to subjectively feel the change of their own timbre, which will affect the experience of the hearing aid wearer, and cause some hearing-impaired patients to be reluctant to wear hearing aids.
  • the purpose of the present invention is to provide an audio signal processing method, device, equipment and storage medium, so as to avoid hearing aid wearers from hearing their own voice through air conduction and bone conduction at the same time, resulting in subjective perception of volume or timbre Changes that affect the wearing experience of hearing aids.
  • an audio signal processing method which can be used for hearing aid equipment, including:
  • the audio signal is processed with a preset amplification gain, wherein the preset amplification gain is smaller than the amplification gain in a normal working state.
  • the audio signal processing method further includes: processing the audio signal by using the amplification gain in a normal working state.
  • the method before the audio signal is processed by using the amplification gain in a normal working state, the method further includes:
  • the step of processing the audio signal by the amplification gain under the normal working state is performed;
  • the current working state is the original sound processing state
  • the current working state is adjusted to the normal working state, and the step of processing the audio signal by using the amplification gain in the normal working state is performed.
  • the method further includes:
  • the step of processing the audio signal with the preset amplification gain is performed
  • the current working state is the normal working state
  • the current working state is adjusted to the original sound processing state, and the step of processing the audio signal with the preset amplification gain is performed.
  • the acquiring the bone conduction signal includes: taking a predetermined period of time as a period, acquiring the bone conduction signal through the bone conduction sensor of the hearing aid.
  • the detecting whether the bone conduction signal includes a voice signal includes: detecting whether the bone conduction signal includes a voice signal through a voice activity detection algorithm.
  • the present invention also provides an audio signal processing device, which can be used for hearing aid equipment, including:
  • a detection module for detecting whether the bone conduction signal contains a voice signal
  • the first processing module is configured to use a preset amplification gain to process the audio signal when the bone conduction signal includes a speech signal, wherein the preset amplification gain is smaller than the amplification gain in a normal working state.
  • the device also includes:
  • the second processing module is configured to process the audio signal by using the amplification gain in a normal working state when the bone conduction signal does not contain a speech signal.
  • the present invention also provides an electronic device, comprising:
  • the processor is configured to implement the steps of the above audio signal processing method when executing the computer program.
  • the present invention also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above audio signal processing method are implemented.
  • an audio signal processing method includes: acquiring a bone conduction signal; detecting whether the bone conduction signal contains a voice signal; if the bone conduction signal contains a voice signal, using a preset amplification gain The audio signal is processed; wherein, the preset amplification gain is smaller than the amplification gain in a normal working state.
  • the hearing aid in this solution processes the audio signal, if it detects that the bone conduction signal contains a speech signal, it is determined that the wearer is speaking, and the audio signal needs to be processed by the preset amplification gain.
  • the amplification gain is less than the amplification gain under normal working conditions, so it can prevent the hearing aid from amplifying the wearer's own speech, which will cause the volume and timbre to change.
  • the invention also discloses an audio signal processing device, equipment and storage medium, which can also achieve the above technical effects.
  • FIG. 1 is a schematic flowchart of an audio signal processing method disclosed in an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of another audio signal processing method disclosed in an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an audio signal processing apparatus disclosed in an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present invention.
  • the hearing aid when the hearing aid amplifies the audio signal, it not only amplifies the audio signal of other people, but also amplifies the wearer's own audio signal, which causes the hearing aid wearer to subjectively feel that the volume and timbre of their own audio have changed. Brings a bad wearing experience.
  • the own voice process OVP
  • OVP own voice process
  • an original sound processing technology based on a bone conduction sensor (Voice Pick-up Sensor, VPU) is proposed to efficiently solve the problem of original sound processing of hearing aids.
  • this solution uses bone conduction signals to identify whether the user is speaking, so as to control the audio processing effect of the hearing aid.
  • the sound amplification function of the hearing aid is reduced/turned off by reducing the gain to prevent the hearing aid from amplifying its own voice. Produces a tone change.
  • the sound amplification capability of the hearing aid is turned on, and the user can fully enjoy the benefits of the hearing aid.
  • this solution uses bone conduction signals to identify whether the user is speaking by himself, which is more convenient, real-time, and accurate than using pure voice signal processing such as voiceprints, which truly makes the original sound processing technology practical.
  • FIG. 1 a schematic flowchart of an audio signal processing method provided by an embodiment of the present invention, the method can be used for a hearing aid device, and specifically includes the following steps:
  • the speech signal reaches the inner ear through two paths, one is transmitted to the inner ear through the vibration of the skull, jaw, etc., which is called bone conduction.
  • the other is that sound waves are transmitted from the external auditory canal to the middle ear through the pinna, and then to the inner ear through the ossicular chain, which is called air conduction.
  • this solution can determine whether the wearer is speaking by analyzing the bone conduction signal when identifying whether the wearer is speaking.
  • the main body of the audio signal processing method is a hearing aid, and the hearing aid determines whether the wearer is speaking through bone conduction signals, so as to adjust the signal amplification gain of the hearing aid, so that the wearer can reduce the signal amplification gain when speaking to prevent Hearing aids amplify the wearer's own speech, resulting in changes in volume and timbre.
  • the bone conduction sensor is not sensitive to the voice signal transmitted by air conduction, the solution can obtain the bone conduction signal through the bone conduction sensor, thereby improving the accuracy of the bone conduction signal.
  • the signal amplification gain can be adjusted through this solution after receiving the opening instruction actively triggered by the user.
  • the real-time nature of the gain adjustment it is also possible to obtain the bone conduction signal through the bone conduction sensor of the hearing aid in a predetermined period of time, and periodically adjust the signal amplification gain.
  • the predetermined duration is the time interval between two acquisitions of the bone conduction signal, for example, if the predetermined duration is set to 2 seconds, after the bone conduction signal is acquired, the bone conduction signal is acquired again after an interval of 2 seconds, and each time the bone conduction signal is acquired After the signal is conducted, the audio signal is processed by this solution.
  • the predetermined duration is used as an example for description. In the actual use process, custom settings can be made according to actual experience.
  • the bone conduction signal obtained by this solution is the bone conduction signal continuously collected by the bone conduction sensor. If the collection time is set to 10 milliseconds, the bone conduction sensor will continuously collect the bone conduction signal for 10 milliseconds each time. You can also customize the settings, which are not specifically limited here.
  • a signal processing algorithm can be used to detect whether the bone conduction signal contains a voice signal, for example, a voice activity detection algorithm (Voice Activity Detection, VAD) can be used to detect whether the bone conduction signal contains a voice signal.
  • VAD Voice Activity Detection
  • the voice activity detection algorithm The function of the algorithm is to identify speech segments and non-speech segments from the audio signal, which includes the following steps:
  • the 8khz bandwidth is divided into 128 subbands, and the energy E g of the lower 24 subbands is calculated according to the following formula.
  • k represents the subband sequence number
  • Y 2 (K) represents the frequency domain signal of the bone conduction signal of the kth subband
  • Y 1 (K) represents the frequency domain signal of the microphone signal of the kth subband
  • the process includes the following steps:
  • the bone conduction signal includes a voice signal
  • the signal amplification gain of a hearing aid refers to the difference between the output and input sound levels, which represents the amplification function of the hearing aid. Adjusting the gain of the hearing aid can change the volume of the hearing aid. Therefore, in this solution, the bone conduction signal is collected by the bone conduction sensor, and after determining whether the user is talking by himself or not, the change of the signal amplification gain of the hearing aid can be controlled according to the information of whether the user is talking by himself. During the period, reduce the hearing aid gain or turn off the hearing aid, and during the non-self-speaking period, turn on the hearing aid normally.
  • two signal amplification gains can be preset, namely: the preset amplification gain and the amplification gain in the normal working state, the preset amplification gain The gain is smaller than the amplification gain in the normal working state.
  • the amplification gain in the normal working state is mainly used to process the audio signal when the user is not speaking, and the preset amplification gain is mainly used to process the audio signal when the user is speaking.
  • the preset amplification gain and the amplification gain in the normal working state can be pre-configured according to the needs of the user. Therefore, the present application can produce different effects by setting the values of the two signal amplification gains.
  • the preset amplification gain is set greater than If it is zero and less than the amplification gain under normal working conditions, it means that the current effect of the hearing aid is to reduce the audio amplification function of the hearing aid. At this time, the wearer can not only hear his own voice through bone conduction, but also hear the amplification through the hearing aid. At this time, the volume of the audio amplified by the hearing aid heard by the wearer is smaller than the volume of the audio amplified when the wearer is not speaking, so it can reduce the wearer's hearing of his own voice through bone conduction and avoid the wearer's subjective feeling Changes in volume or timbre affect the wearing experience of hearing aids.
  • the preset amplification gain is set to zero, it is equivalent to turning off the audio amplification function of the hearing aid. At this time, the external audio will not be amplified, so that the wearer hears his own voice through bone conduction, and there will be no timbre. and volume changes.
  • this solution is based on the accuracy of the bone conduction speech signal obtained by the bone conduction sensor, and can accurately determine whether the current wearer is talking by himself, so as to automatically control the hearing aid to reduce the gain of the original sound air conduction signal, so that the user wears the hearing aid.
  • the subjective feeling of voice before and after wearing is consistent, and it has important social significance and value to improve the wearing experience of hearing aid wearers.
  • FIG. 2 a schematic flowchart of another audio signal processing method provided by an embodiment of the present invention, the method can be used in a hearing aid device, and specifically includes the following steps:
  • the current working state is the normal working state, adjust the current working state to the original sound processing state, and use the preset amplification gain to process the audio signal; wherein the preset amplification gain is smaller than the amplification gain in the normal working state.
  • the voice spoken by the wearer is called the original voice, and two working states are preset, namely: the normal working state and the original sound processing state. If the bone conduction signal does not contain the voice signal, the working state of the hearing aid will be The state is set to the normal working state. If the bone conduction signal contains voice signals, the working state of the hearing aid is set to the original sound processing state. When the hearing aid is processing the signal, it can directly select the corresponding signal amplification gain to process the audio signal according to the working state of the hearing aid.
  • the current working state of the hearing aid is detected.
  • the hearing aid processes the signal through the amplification gain in the normal working state, and then continues the processing of the next detection cycle; if the hearing aid is in the original sound processing state, the working state of the hearing aid is changed to the normal working state, and the The signal amplification gain is restored from the preset amplification gain to the amplification gain of the hearing aid in the normal working state, the current cycle of processing ends, and the next cycle of processing is performed.
  • the current working state of the current hearing aid is detected. If the hearing aid is in the original sound processing state, this cycle of processing ends. In the original sound processing state, the hearing aid will use the preset amplification gain to adjust The signal is processed and the next cycle is processed. If the hearing aid is in normal working state, adjust the current working state of the hearing aid to the original sound processing state, reduce or close the signal amplification gain of the hearing aid, and adjust the signal amplification gain of the hearing aid from the amplification gain in the normal working state to the preset amplification gain , the current cycle process ends, and the next cycle process continues.
  • this scheme detects the bone conduction signal obtained by the bone conduction sensor in each detection cycle. If no voice signal is detected, it is determined that the wearer is not speaking, and the hearing aid is set to be in normal working state at this time. Set the hearing aid to the original sound processing state; in the normal working state, the hearing aid uses the amplification gain under the normal working state to process the audio signal; In this way, the phenomenon of changing the volume and timbre caused by the hearing aid amplifying the wearer's own voice is prevented, so that the hearing aid wearer has the same subjective feeling of his own voice before and after wearing, and the wearing experience of the hearing aid wearer is improved.
  • the signal processing apparatus, equipment, and medium provided by the embodiments of the present invention are introduced below.
  • the signal processing apparatus, equipment, and medium described below and the signal processing method described above can be referred to each other.
  • FIG. 3 a schematic structural diagram of an audio signal processing apparatus provided by an embodiment of the present invention.
  • the apparatus can be used for hearing aid equipment, and the apparatus specifically includes:
  • a detection module 200 configured to detect whether the bone conduction signal includes a voice signal
  • the first processing module 300 is configured to use a preset amplification gain to process the audio signal when the bone conduction signal includes a speech signal, wherein the preset amplification gain is smaller than the amplification gain in a normal working state.
  • the device also includes:
  • the second processing module is configured to process the audio signal by using the amplification gain in a normal working state when the bone conduction signal does not contain a speech signal.
  • the device also includes:
  • a first state determination module for determining a current working state; if the current working state is a normal working state, triggering the second processing module;
  • the first adjustment module is configured to adjust the current working state to a normal working state when the current working state is the original sound processing state, and trigger the second processing module.
  • the device also includes:
  • the second state determination module is used to determine the current working state; if the current working state is the original sound processing state, the first processing module is triggered;
  • the second adjustment module is configured to adjust the current working state to the original sound processing state when the current working state is the normal working state, and trigger the first processing module.
  • the acquisition module is specifically used for acquiring the bone conduction signal through the bone conduction sensor of the hearing aid with a predetermined period of time as a period.
  • the detection module is specifically used for: detecting whether the bone conduction signal contains a voice signal through a voice activity detection algorithm.
  • FIG. 4 it is a schematic structural diagram of an electronic device provided by an embodiment of the present invention, including:
  • memory 11 for storing computer programs
  • the processor 12 is configured to implement the steps of the audio signal processing method described in any of the above method embodiments when executing the computer program.
  • the electronic device is a hearing aid device.
  • the device may include a memory 11 , a processor 12 , as well as a bus 13 , a network interface 14 .
  • the memory 11 includes at least one type of readable storage medium, and the memory 11 may also include both an internal storage unit of the device and an external storage device.
  • the memory 11 can be used not only to store application software installed in the device and various types of data, such as program codes for executing the audio signal processing method, etc., but also to temporarily store data that has been output or will be output.
  • the processor 12 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip in some embodiments, for running the program code or processing stored in the memory 11 Data, such as program code that executes audio signal processing methods, etc.
  • CPU Central Processing Unit
  • controller microcontroller
  • microprocessor or other data processing chip in some embodiments, for running the program code or processing stored in the memory 11 Data, such as program code that executes audio signal processing methods, etc.
  • the bus 13 may be a peripheral component interconnect (PCI for short) bus or an extended industry standard architecture (EISA for short) bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in FIG. 4, but it does not mean that there is only one bus or one type of bus.
  • the device may also include a network interface 14, and the network interface 14 may optionally include a wired interface and/or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is usually used between the device and other electronic devices Establish a communication connection.
  • a network interface 14 may optionally include a wired interface and/or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is usually used between the device and other electronic devices Establish a communication connection.
  • FIG. 4 only shows the device with components 11-14. Those skilled in the art can understand that the structure shown in FIG. Either some components are combined, or different component arrangements.
  • An embodiment of the present invention provides and further discloses a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the audio signal processing described in any of the foregoing method embodiments is implemented steps of the method.
  • the storage medium may include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various storage media that can store program codes medium.
  • U disk mobile hard disk
  • read-only memory Read-Only Memory
  • RAM random access memory
  • magnetic disk or optical disk and other various storage media that can store program codes medium.
  • a software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

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Abstract

本申请一些实施例公开了一种音频信号处理方法、装置、设备及存储介质；在本发明中，助听器在对音频信号处理时，如果检测到骨传导信号中包含语音信号，则认定佩戴者正在说话，此时需采用预设放大增益对音频信号进行处理，由于该预设放大增益小于正常工作状态下的放大增益，所以可防止因助听器放大佩戴者自己说话的语音，导致音量及音色发生改变的现象出现，使得助听器佩戴者对自身语音的佩戴前后主观感受一致，提升助听器佩戴者的佩戴体验。

Description

音频信号处理方法、装置、设备及存储介质
本申请要求于2021年3月31日提交中国专利局、申请号为202110347995.9、发明名称为“音频信号处理方法、装置、设备及存储介质”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。
技术领域
本发明涉及信号处理技术领域，更具体地说，涉及一种音频信号处理方法、装置、设备及存储介质。
背景技术
助听器是帮助人耳聆听的工具，它是一种提高声音强度的装置，可帮助某些听力障碍患者充分利用残余听力，进而补偿耳聋的听力损失。作为一种听力康复手段，它不能使听力障碍患者的听力恢复至正常，但能将声音放大到患者能够听见的水平，帮助听力障碍患者更好地与人交流。
目前，部分助听器配戴者在助听器开机状态下开口讲话时，感觉自己发出的声音不正常。这是因为助听器不仅会放大别人的讲话声，也会放大配戴者自己的语音。由于助听器的麦克风离配戴者的口腔更近，即使用相同声压的声音讲话，助听器配戴者听到自己说话声音比他人说话声更大，有一种扩音的感觉，另外这种放大气导的方式，与人通常通过骨传导感受自说话声音的方式有差异，会导致佩戴者主观感受自身音色的改变，影响助听器佩戴者的体验，导致部分听损患者不愿意佩戴助听器。
发明内容
本发明的目的在于提供一种音频信号处理方法、装置、设备及存储介质，以避免助听器佩戴者因同时通过气导和骨导两种方式听到自己说话声音，导致其主观感受到音量或者音色改变，影响助听器的佩戴体验。
为实现上述目的，本发明提供一种音频信号处理方法，能够用于助听设 备，包括：
获取骨传导信号；
检测所述骨传导信号中是否包含语音信号；
若所述骨传导信号中包含语音信号，则利用预设放大增益对音频信号进行处理；其中，所述预设放大增益小于正常工作状态下的放大增益。
其中，若所述骨传导信号中不包含语音信号，则所述音频信号处理方法还包括：利用正常工作状态下的放大增益对音频信号进行处理。
其中，所述利用正常工作状态下的放大增益对音频信号进行处理之前，还包括：
确定当前工作状态；
若所述当前工作状态为正常工作状态，则执行所述利用正常工作状态下的放大增益对音频信号进行处理的步骤；
若所述当前工作状态为原声处理状态，则将当前工作状态调整为正常工作状态，并执行所述利用正常工作状态下的放大增益对音频信号进行处理的步骤。
其中，所述利用预设放大增益对音频信号进行处理之前，还包括：
确定当前工作状态；
若所述当前工作状态为原声处理状态，则执行所述利用预设放大增益对音频信号进行处理的步骤；
若所述当前工作状态为正常工作状态，则将当前工作状态调整为原声处理状态，并执行所述利用预设放大增益对音频信号进行处理的步骤。
其中，所述获取骨传导信号包括：以预定时长为周期，通过助听器的骨传导传感器获取骨传导信号。
其中，所述检测所述骨传导信号中是否包含语音信号，包括：通过语音活动检测算法检测所述骨传导信号中是否包含语音信号。
为实现上述目的，本发明还提供了一种音频信号处理装置，能够用于助听设备，包括：
获取模块，用于获取骨传导信号；
检测模块，用于检测所述骨传导信号中是否包含语音信号；
第一处理模块，用于在所述骨传导信号中包含语音信号时，利用预设放大增益对音频信号进行处理；其中，所述预设放大增益小于正常工作状态下的放大增益。
其中，所述装置还包括：
第二处理模块，用于在所述骨传导信号中不包含语音信号时，利用正常工作状态下的放大增益对音频信号进行处理。
为实现上述目的，本发明还提供了一种电子设备，包括：
存储器，用于存储计算机程序；
处理器，用于执行所述计算机程序时实现上述音频信号处理方法的步骤。
为实现上述目的，本发明还提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现上述音频信号处理方法的步骤。
通过以上方案可知，本发明实施例提供的一种音频信号处理方法，包括：获取骨传导信号；检测骨传导信号中是否包含语音信号；若骨传导信号中包含语音信号，则利用预设放大增益对音频信号进行处理；其中，预设放大增益小于正常工作状态下的放大增益。
可见，本方案中的助听器在对音频信号处理时，如果检测到骨传导信号中包含语音信号，则认定佩戴者正在说话，此时需采用预设放大增益对音频信号进行处理，由于该预设放大增益小于正常工作状态下的放大增益，所以可防止因助听器放大佩戴者自己说话的语音，导致音量及音色发生改变的现象出现，使得助听器佩戴者对自身语音的佩戴前后主观感受一致，提升助听器佩戴者的佩戴体验。本发明还公开了一种音频信号处理装置、设备及存储介质，同样能实现上述技术效果。
附图说明
为了更清楚地说明本申请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申请的一部分附图，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，还可以根据提供的附图获得其他的附图。
图1为本发明实施例公开的一种音频信号处理方法流程示意图；
图2为本发明实施例公开的另一种音频信号处理方法流程示意图；
图3为本发明实施例公开的一种音频信号处理装置结构示意图；
图4为本发明实施例公开的一种电子设备结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，由于助听器在放大音频信号时，不仅仅放大其他人的音频信号，还放大了佩戴者自身的音频信号，从而导致助听器佩戴者主观感受到自身音频的音量及音色均发生改变，带来了不好的佩戴体验。为了解决该问题，在传统处理方式中，具体是通过原声处理技术(own voice process，OVP)将自己说话的声音和他人说话的声音进行区别处理，但是该方式中，在如何区分自己说话声音和他人说话声音这一问题上，存在辨别困难。
在本发明中，提出了一种基于骨传导传感器(Voice Pick-up Sensor，VPU)的原声处理技术，用以高效解决助听器原声处理问题。具体来说，本方案通过骨传导信号来辨别用户是否说话，从而控制助听器的音频处理效果，当用户自说话时，通过减小增益来减小/关闭助听器的声音放大功能，避免助听器放大自己声音产生音色改变。当用户不说话时，开启助听器的声音放大能力，用户可以充分享受助听器带来的益处。并且，本方案通过骨传导信号来辨别用户是否在自说话的方式，比起使用声纹等纯粹的语音信号处理来说，更加简便、实时、准确，真正地使得原声处理技术能够实用化。
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。
参见图1，本发明实施例提供的一种音频信号处理方法流程示意图，该方 法能够用于助听设备，具体包括如下步骤：
S101、获取骨传导信号；
需要说明的是，由于用户在说话时，语音信号通过两种路径到达内耳，一种是通过颅骨、颌骨等的振动传到内耳，称为骨传导。另一种是声波经耳廓由外耳道传递到中耳，再经听骨链传到内耳，称为气传导。并且，由于用户自己的说话声音主要是通过骨传导传到内耳形成听觉，因此本方案在辨别佩戴者是否在说话时，可通过对骨传导信号的分析来确定佩戴者是否在说话。
在本方案中，音频信号处理方法的执行主体为助听器，助听器通过骨传导信号确定佩戴者是否在说话，从而调整助听器的信号放大增益，使得佩戴者在说话时，通过降低信号放大增益，防止因助听器放大佩戴者自己说话的语音，导致音量及音色发生改变的现象出现。并且，由于骨传导传感器对气导传过来的语音信号不敏感，因此本方案可通过骨传导传感器来获取骨传导信号，从而提高骨传导信号的准确度。
本方案在获取骨传导信号时，若考虑到助听器的资源消耗情况，则可在接收到用户主动触发的打开指令后，再通过本方案对信号放大增益进行调整。当然，若考虑到增益调整的实时性，也可以为以预定时长为周期通过助听器的骨传导传感器获取骨传导信号，周期性的对信号放大增益进行调整，上述两种方式，佩戴者可根据实际情况灵活选择。其中，该预定时长为两次获取骨传导信号之间的时间间隔，如：若设置该预定时长为2秒，则获取骨传导信号后，间隔2秒后再次获取骨传导信号，每次获取骨传导信号后均通过本方案对音频信号进行处理，本实施例中仅以预定时长为2秒为例进行说明，在实际使用过程中，可根据实际经验进行自定义设置。并且，本方案获取的骨传导信号，为骨传导传感器连续采集的骨传导信号，若设置采集时长为10毫秒，则每次骨传导传感器均连续采集10毫秒的骨传导信号，当然，该采集时长也可以自定义设置，在此并不具体限定。
S102、检测该骨传导信号中是否包含语音信号；
可以理解的是，若佩戴者在说话，则骨传导传感器获取的骨传导信号中必然包括佩戴者的语音信号，因此，本方案通过检测骨传导信号中是否包含 语音信号来判断佩戴者是否在说话。在本实施例中，可通过信号处理算法来检测骨传导信号中是否包含语音信号，如：通过语音活动检测算法(Voice Activity Detection，VAD)检测骨传导信号中是否包含语音信号，该语音活动检测算法的作用是从音频信号中识别出语音片段与非语音片段，具体包括以下步骤：
a、计算指定带宽的频谱能量：
如：将音频信号经过FFT(fast Fourier transform，快速傅立叶变换)计算后，将8khz带宽分为128个子带，根据如下公式计算低24个子带能量E g。
Figure PCTCN2021139542-appb-000001
其中，k表示子带序号，Y 2(K)表示第k个子带的骨传导信号的频域信号；
b、计算指定带宽内的相干系数，公式定义如下：
Figure PCTCN2021139542-appb-000002
其中，Y 1(K)表示第k个子带的麦克风信号的频域信号；
c、根据相干系数及频谱能量判定骨传导信号中是否包含语音信号，该过程包括如下步骤：
判断相干系数是否小于k1；
若是，则设置Vad＝0；若否，则判断频谱能量是否小于k2；
若是，则设置Vad＝0；若否，则设置Vad＝1。
其中，上述k1和k2为预先设定的常数，若Vad＝0，则判定骨传导信号中不包含语音信号，若Vad＝1，则判定骨传导信号中包含语音信号。
S103、若骨传导信号中包含语音信号，则利用预设放大增益对音频信号进行处理；其中，该预设放大增益小于正常工作状态下的放大增益。
需要说明的是，助听器的信号放大增益是指输出与输入声级的差值，表示助听器的放大功能，调整助听器增益可以改变助听器的音量。因此，本方案通过骨传导传感器采集骨传导信号，根据骨传导信号确定用户是否在自说话后，可根据用户是否在自说话这一信息，控制助听器的信号放大增益的变化，如：在自说话时段，降低助听器增益或关闭助听器，在非自说话时段，正常开启助听器。
在本方案中，为了在佩戴者说话或者未说话时，自动调整助听器的信号 放大增益，可预先设置两个信号放大增益，即：预设放大增益和正常工作状态下的放大增益，预设放大增益小于正常工作状态下的放大增益，正常工作状态下的放大增益主要用于在用户未说话时对音频信号进行处理，预设放大增益主要用于在用户说话时对音频信号进行处理。该预设放大增益和正常工作状态下的放大增益可根据用户的需求预先配置，因此，本申请通过设置两个信号放大增益的数值，可产生不同的效果，例如：若设置预设放大增益大于零，且小于正常工作状态下的放大增益，则说明助听器目前的效果为减小助听器的音频放大功能，佩戴者此时不仅能通过骨传导方式听到自己的声音，也能通过助听器听到放大的音频，但是此时佩戴者听到的助听器放大的音频的音量要小于佩戴者未说话时放大的音频的音量，因此可减小佩戴者通过骨导听到自己说话声音，避免佩戴者主观感受到音量或者音色改变，影响助听器的佩戴体验。若设置预设放大增益为零，则相当于关闭了助听器的音频放大功能，此时将不会对外界的音频进行放大，这样佩戴者通过骨传导方式听到自己的声音，便不会发生音色及音量的改变。
综上可见，本方案基于骨传导传感器获取骨传导语音信号的精确性，可精确判断当前佩戴者是否在自说话，从而自动控制助听器降低原声气导信号的增益，使得用户佩戴助听器后，对自身语音的佩戴前后主观感受一致，提升助听器佩戴者的佩戴体验，具有重要的社会意义与价值。
参见图2，本发明实施例提供的另一种音频信号处理方法流程示意图，该方法能够用于助听设备，具体包括如下步骤：
S201、以预定时长为周期，通过助听器的骨传导传感器获取骨传导信号；
S202、通过语音活动检测算法检测骨传导信号中是否包含语音信号；
若否，则执行S203；若是，则执行S206；
S203、确定当前工作状态；
S204、若当前工作状态为正常工作状态，则利用正常工作状态下的放大增益对音频信号进行处理；
S205、若当前工作状态为原声处理状态，则将当前工作状态调整为正常工作状态，并利用正常工作状态下的放大增益对音频信号进行处理；
S206、确定当前工作状态；
S207、若当前工作状态为原声处理状态，则利用预设放大增益对音频信号进行处理；
S208、若当前工作状态为正常工作状态，则将当前工作状态调整为原声处理状态，并利用预设放大增益对音频信号进行处理；其中，预设放大增益小于正常工作状态下的放大增益。
在本实施例中，将佩戴者自说话的语音称为原声，并预先设置两个工作状态，即：正常工作状态和原声处理状态，若骨传导信号中不包含语音信号，则将助听器的工作状态设置为正常工作状态，若骨传导信号中包含语音信号，则将助听器的工作状态设置为原声处理状态。助听器在对信号进行处理时，可直接根据助听器的工作状态来选择对应的信号放大增益对音频信号处理。
因此，本方案在每个检测周期获取骨导信号数据后，若检测到该骨传导信号未包含语音信号，则检测助听器的当前工作状态，如果助听器处于正常工作状态，则本周期处理结束，在正常工作状态下助听器通过正常工作状态下的放大增益对信号进行处理，然后继续下一检测周期的处理；如果助听器处于原声处理状态，则将助听器的工作状态更改为正常工作状态，并将助听器的信号放大增益从预设放大增益恢复至助听器在正常工作状态下的放大增益，本周期处理结束，并进行下一周期的处理。
同样的，若检测到该骨传导信号包含语音信号，则检测当前助听器的当前工作状态，如果助听器处于原声处理状态，则本周期处理结束，在原声处理状态下，助听器会通过预设放大增益对信号进行处理，并进行下一周期处理。如果助听器处于正常工作状态，则将助听器的当前工作状态调整为原声处理状态，并减小或关闭助听器信号放大增益，将助听器的信号放大增益从正常工作状态下的放大增益调整至预设放大增益，本周期处理结束，继续进行下一周期处理。
综上可见，本方案在每个检测周期，均对骨传导传感器获取的骨传导信号进行检测，若未检测到语音信号，则认定佩戴者未说话，此时设置助听器为正常工作状态，否则，设置助听器为原声处理状态；在正常工作状态，助听器采用正常工作状态下的放大增益对音频信号进行处理，在原声处理状态， 助听器采用小于正常工作状态下的预设放大增益对音频信号进行处理，从而防止因助听器放大佩戴者自己说话的语音，导致音量及音色发生改变的现象出现，使得助听器佩戴者对自身语音的佩戴前后主观感受一致，提升助听器佩戴者的佩戴体验。
下面对本发明实施例提供的信号处理装置、设备及介质进行介绍，下文描述的信号处理装置、设备及介质与上文描述的信号处理方法可以相互参照。
参见图3，本发明实施例提供的一种音频信号处理装置结构示意图；该装置能够用于助听设备，该装置具体包括：
获取模块100，用于获取骨传导信号；
检测模块200，用于检测所述骨传导信号中是否包含语音信号；
第一处理模块300，用于在所述骨传导信号中包含语音信号时，利用预设放大增益对音频信号进行处理；其中，所述预设放大增益小于正常工作状态下的放大增益。
其中，所述装置还包括：
第二处理模块，用于在所述骨传导信号中不包含语音信号时，利用正常工作状态下的放大增益对音频信号进行处理。
其中，所述装置还包括：
第一状态确定模块，用于确定当前工作状态；若所述当前工作状态为正常工作状态，则触发所述第二处理模块；
第一调整模块，用于在所述当前工作状态为原声处理状态时，将当前工作状态调整为正常工作状态，并触发所述第二处理模块。
其中，所述装置还包括：
第二状态确定模块，用于确定当前工作状态；若所述当前工作状态为原声处理状态，则触发第一处理模块；
第二调整模块，用于在所述当前工作状态为正常工作状态时，将当前工作状态调整为原声处理状态，并触发第一处理模块。
其中，获取模块具体用于：以预定时长为周期，通过助听器的骨传导传感器获取骨传导信号。
其中，检测模块具体用于：通过语音活动检测算法检测所述骨传导信号中是否包含语音信号。
参见图4，为本发明实施例提供的一种电子设备结构示意图，包括：
存储器11，用于存储计算机程序；
处理器12，用于执行所述计算机程序时实现上述任意方法实施例所述的音频信号处理方法的步骤。
在本实施例中，该电子设备为助听器设备。该设备可以包括存储器11、处理器12，以及总线13、网络接口14。
其中，存储器11至少包括一种类型的可读存储介质，存储器11还可以既包括设备的内部存储单元也包括外部存储设备。存储器11不仅可以用于存储安装于设备的应用软件及各类数据，例如执行音频信号处理方法的程序代码等，还可以用于暂时地存储已经输出或者将要输出的数据。
处理器12在一些实施例中可以是一中央处理器(Central Processing Unit,CPU)、控制器、微控制器、微处理器或其他数据处理芯片，用于运行存储器11中存储的程序代码或处理数据，例如执行音频信号处理方法的程序代码等。
该总线13可以是外设部件互连标准(peripheral component interconnect，简称PCI)总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
进一步地，设备还可以包括网络接口14，网络接口14可选的可以包括有线接口和/或无线接口(如WI-FI接口、蓝牙接口等)，通常用于在该设备与其他电子设备之间建立通信连接。
图4仅示出了具有组件11-14的设备，本领域技术人员可以理解的是，图4示出的结构并不构成对设备的限定，可以包括比图示更少或者更多的部件，或者组合某些部件，或者不同的部件布置。
本发明实施例提供还公开了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现上述任 意方法实施例所述的音频信号处理方法的步骤。
其中，该存储介质可以包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本说明书中各个实施例采用并列或者递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同或相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处可参见方法部分说明。
本领域普通技术人员还可以理解，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。

Claims (10)

  1. [根据细则91更正 27.01.2021]
    一种音频信号处理方法，能够用于助听设备，其特征在于，包括：
    获取骨传导信号；
    检测所述骨传导信号中是否包含语音信号；
    若所述骨传导信号中包含语音信号，则利用预设放大增益对音频信号进行处理；其中，所述预设放大增益小于正常工作状态下的放大增益。
  2. 根据权利要求1所述的音频信号处理方法，其特征在于，若所述骨传导信号中不包含语音信号，则所述音频信号处理方法还包括：
    利用正常工作状态下的放大增益对音频信号进行处理。
  3. 根据权利要求2所述的音频信号处理方法，其特征在于，所述利用正常工作状态下的放大增益对音频信号进行处理之前，还包括：
    确定当前工作状态；
    若所述当前工作状态为正常工作状态，则执行所述利用正常工作状态下的放大增益对音频信号进行处理的步骤；
    若所述当前工作状态为原声处理状态，则将当前工作状态调整为正常工作状态，并执行所述利用正常工作状态下的放大增益对音频信号进行处理的步骤。
  4. 根据权利要求1所述的音频信号处理方法，其特征在于，所述利用预设放大增益对音频信号进行处理之前，还包括：
    确定当前工作状态；
    若所述当前工作状态为原声处理状态，则执行所述利用预设放大增益对音频信号进行处理的步骤；
    若所述当前工作状态为正常工作状态，则将当前工作状态调整为原声处理状态，并执行所述利用预设放大增益对音频信号进行处理的步骤。
  5. 根据权利要求1至4中任意一项所述的音频信号处理方法，其特征在于，所述获取骨传导信号包括：
    以预定时长为周期，通过助听器的骨传导传感器获取骨传导信号。
  6. 根据权利要求1至4中任意一项所述的音频信号处理方法，其特征在于，所述检测所述骨传导信号中是否包含语音信号，包括： 通过语音活动检测算法检测所述骨传导信号中是否包含语音信号。
  7. 一种音频信号处理装置，能够用于助听设备，其特征在于，包括：
    获取模块，用于获取骨传导信号；
    检测模块，用于检测所述骨传导信号中是否包含语音信号；
    第一处理模块，用于在所述骨传导信号中包含语音信号时，利用预设放大增益对音频信号进行处理；其中，所述预设放大增益小于正常工作状态下的放大增益。
  8. 根据权利要求7所述的音频信号处理装置，其特征在于，还包括：
    第二处理模块，用于在所述骨传导信号中不包含语音信号时，利用正常工作状态下的放大增益对音频信号进行处理。
  9. 一种电子设备，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于执行所述计算机程序时实现如权利要求1至6任一项所述的音频信号处理方法的步骤。
  10. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至6任一项所述的音频信号处理方法的步骤。
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