CN112468926B - Earphone audio adjusting method and device and terminal equipment - Google Patents
Earphone audio adjusting method and device and terminal equipment Download PDFInfo
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
- 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
- H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
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Abstract
The invention discloses an earphone audio adjusting method, an earphone audio adjusting device and terminal equipment. The method comprises the following steps: according to the acquired current vehicle shaking value, the opening state of the vehicle window and the vehicle speed, determining a first air pressure value and a second air pressure value in the vehicle under the condition that an earphone located in the vehicle meets a preset adjusting condition, wherein the first air pressure value is the air pressure in the vehicle before the vehicle window is opened, and the second air pressure value is the air pressure in the vehicle after the vehicle window is opened for a preset first time; and determining the air pressure change condition within a preset first time period according to the first air pressure value and the second air pressure value, and adjusting the audio signal played through the earphone based on the air pressure change condition. According to the method provided by the embodiment of the invention, the problem that the tone quality of the audio is influenced due to the change of the air pressure in the carriage in the prior art is solved.
Description
Technical Field
The invention relates to the field of audio processing, in particular to an earphone audio adjusting method, an earphone audio adjusting device and terminal equipment.
Background
When passengers are located on a motor car or a car running on a highway, the air pressure environment in the carriage can be changed under the influence of the environment outside the car, for example, the air pressure in the carriage can be suddenly changed when the passengers enter a tunnel or open windows of the car, human ears can sensitively detect the change of the air pressure, and tinnitus or ear rising can occur along with the rise or the fall of the air pressure. If this passenger used the earphone this moment, the tone quality of earphone broadcast audio frequency can receive the influence, and user's physical examination is poor.
Disclosure of Invention
Therefore, the invention provides an earphone audio adjusting method, an earphone audio adjusting device and terminal equipment, and aims to solve the problem that in the prior art, the tone quality of audio is affected due to the change of air pressure in a carriage.
In order to achieve the above object, a first aspect of the present invention provides a headphone audio adjusting method, including: according to the acquired current vehicle shaking value, the opening state of the vehicle window and the vehicle speed, determining a first air pressure value and a second air pressure value in the vehicle under the condition that an earphone located in the vehicle meets a preset adjusting condition, wherein the first air pressure value is the air pressure in the vehicle before the vehicle window is opened, and the second air pressure value is the air pressure in the vehicle after the vehicle window is opened for a preset first time; and determining the air pressure change condition within a preset first time period according to the first air pressure value and the second air pressure value, and adjusting the audio signal played through the earphone based on the air pressure change condition.
A second aspect of the present invention provides a headphone audio adjusting apparatus, comprising: the air pressure determining module is used for determining a first air pressure value and a second air pressure value in the automobile under the condition that the earphone positioned in the automobile meets a preset adjusting condition according to the acquired current vehicle shaking value, the opening state of the window and the automobile speed, wherein the first air pressure value is the air pressure in the automobile before the window is opened, and the second air pressure value is the air pressure in the automobile after the window is opened for a preset first time; and the audio adjusting module is used for determining the air pressure change condition within a preset first time length according to the first air pressure value and the second air pressure value, and adjusting the audio signal played through the earphone based on the air pressure change condition.
A third aspect of the present invention provides a terminal device, including: one or more processors; a memory having one or more programs stored thereon, which when executed by the one or more processors, cause the one or more processors to implement any one of the headphone audio adjustment methods in embodiments of the present invention.
The invention has the following advantages: according to the method, the device and the terminal equipment for adjusting the earphone audio frequency in the embodiment of the invention, the air pressure change condition in the carriage can be determined according to the opening state of the vehicle window, the vehicle jitter value and the vehicle speed, so that the audio signal played through the earphone is adjusted based on the air pressure change condition, and the audio signal played by the earphone is intelligently adjusted. This scheme can provide the audio signal after adjusting according to the atmospheric pressure change condition, helps the user to adapt to eardrum pressure differential fast to reduce the tone quality influence of the audio signal that the eardrum pressure differential that leads to because of atmospheric pressure change caused, and promote user's physical examination.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a scenario of an embodiment of the present invention;
FIG. 2 is a flow chart of a method for adjusting the audio frequency of a headphone according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a neural network model processing collected specified environmental parameters according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a relationship between a weakened amplitude value and a first air pressure value according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a corresponding relationship between a differential pressure compensation value and a pressure ratio formed by a first pressure value and a second pressure value according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an audio adjusting device for a headset according to an embodiment of the present invention;
fig. 7 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing the headphone audio adjustment method and apparatus according to embodiments of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The existing earphone mainly adjusts air pressure and air flow when a user wears the earphone by transforming hardware devices such as an earphone air hole, a vibration film and a support. The adjustment is self-adaptive according to physical phenomena such as air flow and air pressure, and a scheme that targeted and accurate air pressure adjustment cannot be performed on mixed complex environments such as sudden change of air flow after a carriage inward opening window, tire vibration and entering a tunnel cannot be performed, and user experience cannot be guaranteed.
For better understanding of the present invention, the following describes a method, an apparatus and a terminal device for adjusting an audio frequency of a headset according to embodiments of the present invention in detail with reference to the accompanying drawings, and it should be noted that these embodiments are not intended to limit the scope of the present disclosure.
Fig. 1 is a schematic view of a scenario according to an embodiment of the present invention. In the scenario shown in fig. 1, it includes: terminal equipment 11, earphone 12, server 13 and vehicle module 14.
The earphone 12 is connected to the terminal device 11, the server 13 is disposed on the terminal device 11, and the server 13 can receive data collected by the vehicle module 14.
When the terminal device 11 plays the audio file through the earphone 12, the earphone audio adjusting method according to the embodiment of the present invention may be executed through the server 13.
The vehicle module 14 may include various sensing devices such as a window opening size sensor, a vehicle speed sensor, and an angular velocity sensor.
Among them, the terminal 11 may include but is not limited to: personal computers, smart phones, tablet computers, personal digital assistants, and the like. The user can input the contents of the questions into the question-answering service platform 12 through the terminal 11. The connection between the terminal device 11 and the earphone 12 may be a wired connection or a wireless connection, such as a bluetooth connection. The embodiment of the invention does not specifically limit the connection between the terminal equipment and the earphone.
In one embodiment, the server 13 may collect one or more of the following data items for the car sensors: the system comprises a server, a vehicle, sensors, a vehicle speed sensor, an external wind speed sensor, a window opening size sensor, a vehicle shaking condition sensor and a vehicle monitoring system.
It should be understood that the number of sensors included in the vehicle module in fig. 1 is merely illustrative. According to the practical application needs, the flexible setting can be carried out, and the content in the aspect is not limited.
Fig. 2 is a flowchart illustrating a method of adjusting an audio of a headset according to an embodiment of the present invention. As shown in fig. 2, the method for adjusting audio frequency of a headphone in the embodiment of the present invention includes the following steps:
step S210, according to the acquired current vehicle shaking value, the opening state of the vehicle window and the vehicle speed, under the condition that the earphone located in the vehicle meets the preset adjusting condition, determining a first air pressure value and a second air pressure value in the vehicle, wherein the first air pressure value is the air pressure in the vehicle before the vehicle window is opened, and the second air pressure value is the air pressure in the vehicle after the vehicle window is opened for a preset first time.
Step S220, according to the first air pressure value and the second air pressure value, determining the air pressure change condition within a preset first time period, and adjusting the audio signal played through the earphone based on the air pressure change condition.
According to the earphone audio adjusting method provided by the embodiment of the invention, the air pressure change condition in the vehicle can be determined according to the opening state of the vehicle window, the vehicle jitter value and the vehicle speed, so that the audio signal played through the earphone is adjusted based on the air pressure change condition, and the audio signal played by the earphone is intelligently adjusted. This scheme can provide the audio signal after adjusting according to the atmospheric pressure change condition, helps the user to adapt to eardrum pressure difference fast to reduce the tone quality influence of the audio signal that the eardrum pressure difference that leads to because of atmospheric pressure changes causes, promote user's physical examination.
In some embodiments, the headset is connected to a terminal device in the vehicle; before step S110, the headphone audio adjusting method may further include the following steps.
S11, acquiring the vibration amplitude, vibration rate and vibration frequency of the terminal equipment in a horizontal placement state within unit time through a sensor positioned on the terminal equipment; s12, calculating the product of the preset first adjusting coefficient and the vibration amplitude, the vibration rate and the vibration frequency in unit time to obtain the vibration value of the terminal equipment; and S13, taking the product of the vibration value of the terminal equipment and a preset second adjusting coefficient as the presumed current vehicle shaking value.
Through S11-S13, data collection may be performed by a sensor located at the terminal device, so that the current vehicle shake value is presumed from the collected data.
In one embodiment, the server of the terminal device may obtain the current vehicle shake value as follows. The vehicle shaking value acquisition mode comprises the following steps: placing the terminal device in a horizontal position in the vehicle, for example on a horizontal panel; obtaining the vibration frequency of the terminal equipment in the direction vertical to the ground through a vibration sensor of the terminal equipment; calling an angular velocity sensor positioned in the terminal equipment to acquire vibration amplitude, vibration rate, vibration acceleration and vibration frequency in unit time; calculating a vibration value of the mobile phone in unit time, wherein the vibration value is x vibration amplitude x vibration rate x vibration frequency, and x is a preset first adjusting coefficient; and obtaining a mobile phone vibration value through the formula, and then, estimating a vehicle shaking value which is the mobile phone vibration value y according to the mobile phone vibration value, wherein y is a preset second adjusting coefficient.
Preferably, the horizontal panel is smooth in material and hard in surface, so that the accuracy of the terminal equipment in obtaining the vibration frequency of the terminal equipment in the direction vertical to the ground is improved; it should be understood that the values of the first adjustment coefficient x and the second adjustment coefficient y may be set by a user in a self-defined manner according to an actual application scenario, or the values of the first adjustment coefficient x and the second adjustment coefficient y may also be empirical values.
In some embodiments, the predetermined adjustment conditions include: the opening state of the vehicle window is that the rear window is opened and the front window is not opened, the vehicle speed is greater than or equal to a preset vehicle speed threshold value, and the current vehicle jitter value is greater than or equal to a preset jitter threshold value.
In this embodiment, the step of determining the first air pressure value and the second air pressure value in the vehicle in step S210 may specifically include: processing the designated environmental parameters collected at the position of the driver through a preset neural network model to obtain a first air pressure value and a second air pressure value; the neural network model is obtained by training a neural network in advance according to specified environmental parameters, a plurality of preset adjusting parameters, the air pressure of the position of the driver measured before the rear window is opened and the air pressures of the position of the driver measured at a plurality of different time points after the rear window is opened; specifying environmental parameters includes: local air pressure, vehicle speed, wind direction, wind speed and rear window opening size.
In the embodiment of the invention, the server evaluates the influence of the air pressure in the vehicle and the bump vibration on the ear pressure according to different conditions of the specified environmental parameter and the current vehicle shake value.
For example, if the information reported by the automobile window opening module is as follows: the driver is located the driver's seat, and the vehicle rear window is opened and the front window is not opened, and the speed of a motor vehicle is greater than predetermineeing the speed of a motor vehicle threshold value, and vehicle jitter value is greater than predetermineeing vehicle jitter threshold value, and this kind of condition can lead to the internal air pressure of car to reduce suddenly, and vehicle jitter is great to eardrum resonance's influence, and eardrum vibration frequency sudden change, and the atmospheric pressure in the eardrum is too late to come with the external atmospheric pressure balance of quick change. Therefore, audio processing is required according to the change of the air pressure in the vehicle to balance the sound quality influence caused by the change of the ear pressure.
In one embodiment, fig. 3 is a schematic diagram illustrating a neural network model processing collected specified environmental parameters according to an embodiment of the present invention.
In fig. 3, input data of the input layer of the neural network model includes: local air pressure, vehicle running speed, wind direction outside the vehicle, wind speed outside the vehicle and opening size of a rear window; the transport layer parameters of the neural network model include a plurality of tuning parameters, which may be represented, for example, as a1, a2, A3, … …, Aw, w are integers greater than 1; the outputs of the neural network model are a first air pressure value P1 (the air pressure in the vehicle before the window is opened) and a second air pressure value P2(t) (the air pressure in the vehicle after the window is opened for a predetermined first time period t).
In one embodiment, model training of a neural network may include the following steps.
Acquiring an in-vehicle air pressure P1 before a vehicle opens a rear window and an air pressure P2(t) after the time length of the opening t of the rear window, wherein the acquisition positions of P1 and P2 comprise the position of a driver; generating an initial neural network model; according to the measured air pressure of the position of the automobile driver before and after the automobile window is opened, the wind direction outside the automobile, the wind speed outside the automobile and the opening size of the rear automobile window, the initial neural network model is subjected to machine learning training for many times according to the initial values of multiple parameters of the input layer, the actually measured air pressure in the automobile before the automobile window is opened and the air pressure in the automobile after the automobile window is opened for a preset specified time, values of multiple adjusting parameters of the neural network model are deduced, and the trained neural network model is obtained.
According to the trained neural network model, when the earphone audio frequency adjustment of ear pressure balance is needed each time, local air pressure, vehicle speed, wind direction, wind speed and the opening size of the rear window of the automobile can be obtained, and the corresponding in-automobile air pressure P1 before the window is opened in the driving process of the automobile and a function curve P2(t) of the in-automobile air pressure after the window is opened along with the opening time length of the window are predicted by the neural network model obtained through machine learning training.
In some embodiments, step S220 may specifically include the following steps.
And S21, calculating to obtain an amplitude weakening value corresponding to the first air pressure value according to the functional relation between the first air pressure value and the preset first air pressure and amplitude weakening.
And S22, calculating the air pressure ratio of the first air pressure value and the second air pressure value, and calculating to obtain a differential pressure compensation value corresponding to the air pressure ratio according to the functional relationship between the air pressure ratio and the preset air pressure change and differential pressure compensation.
And S23, taking the product of the air pressure ratio and the pressure difference compensation value as a power amplification coefficient, and calculating the product of the amplitude of the audio signal in the time domain and the power amplification coefficient to obtain the adjusted audio signal.
In one embodiment, the server of the terminal device obtains an audio file to be played, obtains a function F (X1) of an audio signal in a time domain through audio decoding, time domain analysis and frequency domain analysis, and obtains a function Z (X2) of an audio sound wave in a frequency domain.
In the embodiment of the present invention, the audio signal is a periodic signal, and the time domain analysis and the frequency domain analysis are two different ways of periodically analyzing the audio signal. In brief, the time domain can be used to describe the relationship F (X1) of the speech signal to the time (X1), i.e. the dynamic change of the speech signal with the time is analyzed by taking the time as a variable; and the frequency domain can be used to describe the relationship Z (X2) between the speech signal and the frequency (X2), i.e. the characteristics of the speech signal at different frequencies are analyzed with the frequency as a variable.
In the embodiment of the invention, because the air pressure in the tympanic membrane is higher than that in the carriage, the tympanic membrane has outward bulging feeling, the earphone needs to be adjusted as follows through S21-S23, the server of the terminal equipment can call and analyze the audio playing module of the mobile phone, and the power amplification module is adopted at the earphone end to perform the processing of amplitude weakening and pressure difference compensation on the audio signal through the power amplification coefficient obtained by calculation, so that the effect of improving the air pressure of the tympanic membrane by the earphone is realized.
In some embodiments, the amplitude weakening value is monotonically decreasing with the first air pressure value, and the pressure difference compensation value is monotonically decreasing with the air pressure ratio value.
If the first air pressure value is within the range of the first air pressure interval, the change rate of the amplitude weakening value is larger than a preset first change rate threshold value, wherein the first air pressure interval is a value interval which is larger than or equal to the local air pressure and smaller than or equal to a specified air pressure threshold value.
If the first air pressure value is within a second air pressure range, the change rate of the amplitude weakening value is smaller than or equal to a first change rate threshold value, wherein the second air pressure range is a value range larger than or equal to a specified air pressure threshold value.
If the air pressure ratio is within a first ratio interval range, the change rate of the differential pressure compensation value is greater than a preset second change rate threshold value, wherein the first ratio interval is greater than or equal to 1 and is less than or equal to a value interval of a preset first value.
And if the air pressure ratio is within a second ratio interval range, the change rate of the differential pressure compensation value is smaller than or equal to a second change rate threshold value, wherein the second ratio interval is a value interval larger than the preset first value.
In this embodiment, the audio ear pressure compensation method by audio adjustment is as follows: and multiplying the amplitude of the audio signal in the time domain at the earphone end by a power amplification coefficient k, wherein the power amplification coefficient k has a corresponding relation with the first air pressure value and the air pressure ratio of the first air pressure value to the second air pressure value.
It should be understood that the corresponding relationship may be obtained according to a plurality of data acquisition experiments, and the embodiment of the present invention is not particularly limited. As an example, the present invention may use, but is not limited to, the power amplification coefficient k described by the following expression (1).
k＝f1(P1)*f2(P1/P2) (1)
In the above expression (1), P1 is a first air pressure value, i.e., the vehicle interior air pressure before the window is opened, and P2 is a second air pressure value, i.e., the vehicle interior air pressure after the window is opened for a predetermined first period of time; the number f1(P1) is a monotonically decreasing function of the amplitude attenuation value with respect to the first air pressure value P1, and f2(P1/P2) is a monotonically decreasing function of the pressure difference compensation value with respect to P1/P2.
For the convenience of understanding, in the power amplification coefficient expression, the correspondence relationship between the amplitude weakening value and the first air pressure value, and the correspondence relationship between the differential pressure compensation value and the air pressure ratio formed by the first air pressure value and the second air pressure value are described below by using fig. 4 and fig. 5.
FIG. 4 is a diagram illustrating a relationship between an amplitude reduction value and a first air pressure value according to an embodiment of the present invention; fig. 5 is a schematic diagram illustrating a corresponding relationship between the differential pressure compensation value and an air pressure ratio formed by the first air pressure value and the second air pressure value according to an embodiment of the present invention.
As shown in fig. 4, in the above expression (1), the f1 function is a monotonically decreasing function of the amplitude weakness value with respect to the first air pressure value P1. Specifically, when the P1 is in a value range that is greater than or equal to the local air pressure and less than or equal to the specified air pressure threshold, the first derivative of the f1 function needs to be greater than the first change rate threshold; when P1 is in the air pressure range greater than the specified air pressure threshold, the first derivative of the f1 function needs to be less than or equal to the first rate of change threshold.
As shown in fig. 5, in the above expression (1), the f2 function is a monotonically decreasing function of the differential pressure compensation value with respect to P1/P2, that is, with respect to the air pressure ratio formed by the first air pressure value and the second air pressure value. Specifically, when the value range of P1/P2 is greater than or equal to 1 and less than or equal to a preset first value, the first-order derivative of the F2 function should be greater than the second change rate threshold, and when the value range of P1/P2 is greater than the preset first value, the first-order derivative of F2 should be less than or equal to the second change rate threshold.
It should be noted that the specified air pressure threshold, the first change rate threshold, the preset first value, and the second change rate threshold may be empirical values obtained by performing a plurality of experiments according to the biological structure of the human ear, and may be preset according to the empirical values, which is not limited in the embodiment of the present invention.
In some embodiments, the audio signal includes a pre-marked specific audio signal; step S220 may specifically include the following steps.
And S31, filtering the specific audio signal through a preset band elimination filter to obtain the specific audio signal after filtering.
The stopband center frequency of the bandstop filter is the current vehicle jitter value, and the stopband bandwidth value of the bandstop filter is within the preset stopband bandwidth interval range; the center value of the stop band bandwidth interval is the current vehicle jitter value, and the length of the stop band bandwidth interval is half of the length of the stop band bandwidth interval and is calculated according to the difference value between the first air pressure value and the second air pressure value and the product of the current vehicle jitter value and a preset third adjusting coefficient; the quality factor of the band elimination filter is the interval length between the current vehicle jitter value and the stop band bandwidth interval; the passband voltage amplification factor of the band elimination filter and the current vehicle jitter value are in a monotone increasing relationship.
In this embodiment, when a specific audio signal of a mark is played, the server of the terminal device may process a function Z (X2) of the audio signal in a frequency domain, and drive the earphone to enable the band-stop filter to perform optimal coloring on the audio, so as to avoid an auditory poor experience caused by the audio resonating with the eardrum in a frequency domain after the rear window is opened.
In one embodiment, the transfer function of the band-stop filter may be expressed as the following expression (2).
In the above expression (2), Aup is the pass band voltage amplification factor, ω 0 The stopband center angular frequency, ω is the natural angular frequency. Wherein, the stop band center frequency omega of the filter 0 Taking the value of vehicle jitter as, band stopThe value of the stop band bandwidth BW of the filter is greater than or equal to (m-a) and less than or equal to m + a, m is the central value of the stop band bandwidth interval and is the current vehicle jitter value, and a is half of the interval length of the stop band bandwidth interval.
In one embodiment, the value of a, i.e., half of the interval length of the stop band bandwidth interval, may represent the following expression (3).
a＝k*(P1-P2)*m (3)
In the above expression (3), k is a third adjustment coefficient, and may be obtained from an empirical value or a plurality of experiments.
In one embodiment, the figure of merit of the band-stop filter may represent the following expression (4).
Q＝ω 0 /BW＝m/2a (4)
In the above expression (3), Q is the quality factor of the band-stop filter, ω 0 The meanings and values of BW, m, and a are the same as those in expressions (2) and (3), and the embodiment of the present invention is not described in detail.
In one embodiment, the passband voltage amplification factor a has a functional relationship F3(m) with the vehicle jitter value m, the F3 function is a monotonically increasing function of the passband voltage amplification factor with respect to the vehicle jitter value m, and the patent does not limit the function formula.
In the embodiment of the invention, the pre-marked specific audio signal can be filtered, so that the audio signal processing of pressure difference compensation is carried out on the marked audio signal, and the power amplification compensation processing of the earphone is carried out on the marked audio point.
In some embodiments, the headphone audio adjusting method may further include the following step before the step of filtering the specific audio signal through a preset band-stop filter at S31.
S41, obtaining a specific audio signal from the audio signal, and marking the specific audio signal to obtain a marked specific audio signal; the specific audio signal is an audio signal of which the amplitude in the time domain is greater than a preset first amplitude threshold value, the amplitude change rate is greater than a preset amplitude change rate threshold value, and the amplitude in the frequency domain is greater than a preset second amplitude threshold value.
In this embodiment, the audio point where the amplitude of the audio signal in the time domain is greater than the preset first amplitude threshold, the first derivative of the function F (X1) of the audio signal in the time domain is greater than the preset amplitude change rate threshold, and the amplitude of the function Z (X2) of the audio signal in the frequency domain is less than the preset second amplitude threshold may be labeled. The server of the terminal equipment performs power amplifier compensation processing on the earphone on the audio point marked by the type of the audio point so as to achieve the effect of balancing the eardrum pressure difference and improve the physical examination of the user.
In some embodiments, the step of adjusting the audio signal played through the earphone based on the air pressure change in step S220 includes: within a preset compensation duration, adjusting an audio signal played through an earphone based on the air pressure change condition; and the preset compensation time length and the current vehicle shaking value are in monotone increasing relation.
In this embodiment, the compensation period of the audio signal may be performed according to the change rates of the first barometric pressure, the second barometric pressure, and the vehicle shake value. Since the ear will gradually adapt to the eardrum pressure difference within a certain period of time, the compensation time period has a functional relationship with the vehicle shake value, and the functional relationship between the compensation time period and the vehicle shake value can be expressed as a monotonically increasing function F4(m), for example, and the patent does not limit the functional formula.
In some embodiments, in the process of adjusting the audio signal played through the earphone based on the air pressure change condition, the window opening module reports the following information to the server: if the detection position is in the driving position and the front window is opened, the audio signal is not required to be adjusted and compensated continuously.
In the earphone audio adjusting method provided by the embodiment of the invention, the change of the air pressure in the vehicle can be judged according to the opening of the vehicle window, the vehicle speed and the vehicle shake, the power amplifier and the filter of the terminal earphone are compensated and the audio signal is optimized according to the change of the air pressure in the vehicle, so that a user can be helped to adapt to the differential pressure of the eardrum quickly, the influence of the tone quality of the audio signal caused by the differential pressure of the eardrum caused by the change of the air pressure is reduced, and the physical examination of the user is improved.
The following describes an earphone audio adjusting device according to an embodiment of the present invention in detail with reference to the accompanying drawings.
Fig. 6 is a schematic structural diagram illustrating an earphone audio adjusting apparatus according to an embodiment of the present invention. As shown in fig. 6, the headphone audio adjusting apparatus includes the following modules.
The air pressure determining module 610 is configured to determine a first air pressure value and a second air pressure value in the vehicle when it is determined that the earphone located in the vehicle meets a predetermined adjustment condition according to the acquired current vehicle shake value, the opening state of the window, and the vehicle speed, where the first air pressure value is the air pressure in the vehicle before the window is opened, and the second air pressure value is the air pressure in the vehicle after the window is opened for a predetermined first time;
and the audio adjusting module 620 is configured to determine an air pressure change condition within a predetermined first time period according to the first air pressure value and the second air pressure value, and adjust an audio signal played through the earphone based on the air pressure change condition.
In some embodiments, the headset is connected to a terminal device in the vehicle; the headphone audio adjusting apparatus further includes: the data acquisition module is used for acquiring the vibration amplitude, the vibration rate and the vibration frequency of the terminal equipment in a horizontal placement state within a unit time through a sensor positioned on the terminal equipment before determining that an earphone positioned in the automobile meets a preset adjusting condition according to the acquired current vehicle jitter value, the opening state of a vehicle window and the vehicle speed; the vibration value calculation module is used for calculating the product of a preset first regulation coefficient and vibration amplitude, vibration rate and vibration frequency in unit time to obtain the vibration value of the terminal equipment; and the jitter value calculation module is used for taking the product of the vibration value of the terminal equipment and a preset second adjusting coefficient as the presumed current vehicle jitter value.
In some embodiments, the predetermined adjustment condition includes: the opening state of the vehicle window is that the rear window is opened and the front window is not opened, the vehicle speed is greater than or equal to a preset vehicle speed threshold value, and the current vehicle jitter value is greater than or equal to a preset jitter threshold value.
The air pressure determining module 610 is used for determining a first air pressure value and a second air pressure value in the vehicle, and specifically is used for processing the designated environment parameters collected at the position of the driver through a preset neural network model to obtain the first air pressure value and the second air pressure value; the neural network model is obtained by training a neural network in advance according to specified environmental parameters, a plurality of preset adjusting parameters, the air pressure of the position of the driver measured before the rear window is opened and the air pressures of the position of the driver measured at a plurality of different time points after the rear window is opened; specifying environmental parameters includes: local air pressure, vehicle speed, wind direction, wind speed and rear window opening size.
In some embodiments, the audio adjustment module 620 is specifically configured to: calculating to obtain an amplitude weakening value corresponding to the first air pressure value according to the functional relation between the first air pressure value and the preset first air pressure and amplitude weakening; calculating the air pressure ratio of the first air pressure value and the second air pressure value, and calculating to obtain a differential pressure compensation value corresponding to the air pressure ratio according to the functional relationship between the air pressure ratio and the preset air pressure change and differential pressure compensation; and taking the product of the air pressure ratio and the pressure difference compensation value as a power amplification coefficient, and calculating the product of the amplitude of the audio signal in the time domain and the power amplification coefficient to obtain the adjusted audio signal.
In some embodiments, the amplitude reduction value and the first air pressure value are in a monotonically decreasing relationship, and the pressure difference compensation value and the air pressure ratio value are in a monotonically decreasing relationship; if the first air pressure value is within the range of the first air pressure interval, the change rate of the amplitude weakening value is greater than a preset first change rate threshold value, wherein the first air pressure interval is a value interval which is greater than or equal to the local air pressure and less than or equal to a specified air pressure threshold value; if the first air pressure value is within a second air pressure range, the change rate of the amplitude weakening value is smaller than or equal to a first change rate threshold value, wherein the second air pressure range is a value range larger than or equal to a specified air pressure threshold value; if the air pressure ratio is within a first ratio interval range, the change rate of the differential pressure compensation value is greater than a preset second change rate threshold value, wherein the first ratio interval is a value interval which is greater than or equal to 1 and less than or equal to a preset first value; and if the air pressure ratio is within a second ratio interval, the change rate of the differential pressure compensation value is smaller than or equal to a second change rate threshold value, wherein the second ratio interval is a value interval larger than the preset first value.
In some embodiments, the audio signal includes a pre-marked specific audio signal; the audio adjusting module 620 is specifically configured to: and filtering the specific audio signal through a preset band elimination filter to obtain the specific audio signal after filtering.
The stopband center frequency of the bandstop filter is the current vehicle jitter value; the stopband bandwidth value of the bandstop filter is within the range of a preset stopband bandwidth interval; the center value of the stop band bandwidth interval is the current vehicle jitter value, and the length of the stop band bandwidth interval is half of the length of the stop band bandwidth interval and is calculated according to the difference value between the first air pressure value and the second air pressure value and the product of the current vehicle jitter value and a preset third adjusting coefficient; the quality factor of the band elimination filter is the interval length between the current vehicle jitter value and the stop band bandwidth interval; the passband voltage amplification factor of the band elimination filter and the current vehicle jitter value are in a monotone increasing relationship.
In some embodiments, the headphone audio adjustment apparatus further comprises: the audio marking module is used for acquiring a specific audio signal from the audio signal before filtering the specific audio signal through a preset band elimination filter, and marking the specific audio signal to obtain a marked specific audio signal; the specific audio signal is an audio signal of which the amplitude in the time domain is greater than a preset first amplitude threshold value, the amplitude change rate is greater than a preset amplitude change rate threshold value, and the amplitude in the frequency domain is greater than a preset second amplitude threshold value.
In some embodiments, the audio adjusting module 620, when configured to adjust the audio signal played through the earphone based on the air pressure variation, is specifically configured to: within a preset compensation duration, adjusting an audio signal played through an earphone based on the air pressure change condition; and the preset compensation time length and the current vehicle shaking value are in monotone increasing relation.
According to the earphone audio adjusting device provided by the embodiment of the invention, the change condition of the air pressure in the vehicle can be determined according to the opening state of the vehicle window, the vehicle jitter value and the vehicle speed, so that the audio signal played through the earphone can be adjusted based on the change condition of the air pressure, the device for intelligently adjusting the earphone according to the vehicle window, the vehicle jitter and the air pressure in the vehicle can be realized, and the tone quality of the audio played by the earphone can be adjusted by combining the sudden change of the tympanic membrane pressure difference in the driving process, so that a user can be helped to quickly adapt to the tympanic membrane pressure difference, the tone quality influence of the audio signal caused by the tympanic membrane pressure difference due to the air pressure change is reduced, and the physical examination of the user is improved.
It is to be understood that the invention is not limited to the particular arrangements and instrumentality described in the above embodiments and shown in the drawings. For convenience and brevity of description, detailed description of a known method is omitted here, and for the specific working processes of the system, the module and the unit described above, reference may be made to corresponding processes in the foregoing method embodiments, which are not described herein again.
Fig. 7 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing the headphone audio adjustment method and apparatus according to embodiments of the present invention.
As shown in fig. 7, computing device 700 includes an input device 701, an input interface 702, a central processor 703, a memory 704, an output interface 705, and an output device 706. The input interface 702, the central processing unit 703, the memory 704, and the output interface 705 are connected to each other via a bus 710, and the input device 701 and the output device 706 are connected to the bus 710 via the input interface 702 and the output interface 705, respectively, and further connected to other components of the computing device 700.
Specifically, the input device 701 receives input information from the outside, and transmits the input information to the central processor 703 through the input interface 702; the central processor 703 processes input information based on computer-executable instructions stored in the memory 704 to generate output information, stores the output information temporarily or permanently in the memory 704, and then transmits the output information to the output device 706 through the output interface 705; the output device 706 outputs output information external to the computing device 700 for use by a user.
In one embodiment, the computing device 700 shown in fig. 7 may be implemented as a terminal device that may include: a memory configured to store a program; a processor configured to execute the program stored in the memory to perform the headphone audio adjusting method described in the above embodiments.
In one embodiment, the computing device 700 shown in fig. 7 may be implemented as a server at a terminal device, which may include: a memory configured to store a program; a processor configured to execute a program stored in the memory to perform the headphone audio adjusting method described in the above embodiments.
According to an embodiment of the invention, the process described above with reference to the flow chart may be implemented as a computer software program. For example, embodiments of the invention include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network, and/or installed from a removable storage medium.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions which, when run on a computer, cause the computer to perform the methods described in the various embodiments above. The procedures or functions according to the embodiments of the invention are brought about in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), among others.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A method for headphone audio adjustment, comprising:
according to the acquired current vehicle shaking value, the opening state of a vehicle window and the vehicle speed, determining a first air pressure value and a second air pressure value in the vehicle under the condition that an earphone located in the vehicle meets a preset adjusting condition, wherein the first air pressure value is the air pressure in the vehicle before the vehicle window is opened, and the second air pressure value is the air pressure in the vehicle after the vehicle window is opened for a preset first time;
determining the air pressure change condition within the preset first time according to the first air pressure value and the second air pressure value, and adjusting the audio signal played through the earphone based on the air pressure change condition, wherein the method comprises the following steps:
calculating to obtain an amplitude weakening value corresponding to the first air pressure value according to the functional relation between the first air pressure value and a preset first air pressure and amplitude weakening; calculating to obtain a differential pressure compensation value corresponding to the air pressure ratio according to the air pressure ratio of the first air pressure value to the second air pressure value and a function relation between preset air pressure change and differential pressure compensation; and taking the product of the air pressure ratio and the differential pressure compensation value as a power amplification coefficient, and calculating the product of the amplitude of the audio signal in the time domain and the power amplification coefficient to obtain the adjusted audio signal.
2. The method of claim 1, wherein the headset is connected to a terminal device in a vehicle; before determining that an earphone located in the vehicle meets a preset adjusting condition according to the collected current vehicle shaking value, the opening state of a vehicle window and the vehicle speed, the method further comprises the following steps:
acquiring vibration amplitude, vibration rate and vibration frequency of the terminal equipment in a unit time in a horizontal placement state through a sensor positioned on the terminal equipment;
calculating the product of a preset first adjusting coefficient and the vibration amplitude, the vibration rate and the vibration frequency in unit time to obtain the vibration value of the terminal equipment;
and taking the product of the vibration value of the terminal equipment and a preset second adjusting coefficient as the presumed current vehicle shaking value.
3. The method of claim 1, wherein the predetermined adjustment condition comprises: the opening state of the vehicle window is that the rear window is opened and the front window is not opened, the vehicle speed is greater than or equal to a preset vehicle speed threshold value, and the current vehicle jitter value is greater than or equal to a preset jitter threshold value;
the determining a first air pressure value and a second air pressure value within the vehicle includes:
processing the designated environmental parameters collected at the position of the driver through a preset neural network model to obtain the first air pressure value and the second air pressure value; wherein the content of the first and second substances,
the neural network model is obtained by training a neural network in advance according to the specified environmental parameters, a plurality of preset adjusting parameters, the air pressure of the position of the driver measured before the rear window is opened and the air pressures of the position of the driver measured at a plurality of different time points after the rear window is opened;
the specified environmental parameters include: local air pressure, vehicle speed, wind direction, wind speed and rear window opening size.
4. The method of claim 1,
the amplitude weakening value and the first air pressure value are in a monotonically decreasing relation, and the differential pressure compensation value and the air pressure ratio value are in a monotonically decreasing relation;
if the first air pressure value is within a first air pressure interval range, the change rate of the amplitude weakening value is larger than a preset first change rate threshold value, wherein the first air pressure interval is a value interval which is larger than or equal to local air pressure and smaller than or equal to a specified air pressure threshold value;
if the first air pressure value is within a second air pressure interval, the change rate of the amplitude weakening value is smaller than or equal to the first change rate threshold, wherein the second air pressure interval is a value interval larger than or equal to the specified air pressure threshold;
if the air pressure ratio is within a first ratio interval range, the change rate of the differential pressure compensation value is greater than a preset second change rate threshold value, wherein the first ratio interval is a value interval which is greater than or equal to 1 and less than or equal to a preset first value;
and if the air pressure ratio is within a second ratio interval, the change rate of the differential pressure compensation value is smaller than or equal to a second change rate threshold value, wherein the second ratio interval is a value interval larger than the preset first value.
5. The method of claim 1, wherein the audio signal comprises a pre-marked specific audio signal; the determining, according to the first air pressure value and the second air pressure value, an air pressure change condition within the predetermined first time period, and adjusting an audio signal played through a headphone based on the air pressure change condition includes:
filtering the specific audio signal through a preset band elimination filter to obtain the specific audio signal after filtering;
wherein the stopband center frequency of the bandstop filter is the current vehicle jitter value;
the stopband width value of the stopband filter is within a preset stopband width interval range;
the central value of the stop band bandwidth interval is the current vehicle jitter value, and the length of the stop band bandwidth interval is half of the length of the stop band bandwidth interval and is calculated according to the difference value between the first air pressure value and the second air pressure value and the product of the current vehicle jitter value and a preset third adjusting coefficient;
the quality factor of the band elimination filter is the interval length between the current vehicle jitter value and the stop band bandwidth interval;
the passband voltage amplification factor of the band elimination filter and the current vehicle jitter value are in a monotone increasing relationship.
6. The method according to claim 5, wherein before the filtering process of the specific audio signal by a preset band-stop filter, the method further comprises:
acquiring a specific audio signal from the audio signal, and marking the specific audio signal to obtain a marked specific audio signal; wherein the content of the first and second substances,
the specific audio signal is an audio signal of which the amplitude in the time domain is greater than a preset first amplitude threshold value, the amplitude change rate is greater than a preset amplitude change rate threshold value, and the amplitude in the frequency domain is greater than a preset second amplitude threshold value.
7. The method of claim 1, wherein adjusting the audio signal played through the headphones based on the air pressure change comprises:
within a preset compensation duration, adjusting an audio signal played through an earphone based on the air pressure change condition; and the preset compensation time length and the current vehicle shaking value are in a monotone increasing relationship.
8. An earphone audio conditioning device, comprising:
the air pressure determining module is used for determining a first air pressure value and a second air pressure value in the automobile under the condition that the earphone positioned in the automobile meets a preset adjusting condition according to the acquired current vehicle shaking value, the opening state of the window and the automobile speed, wherein the first air pressure value is the air pressure in the automobile before the window is opened, and the second air pressure value is the air pressure in the automobile after the window is opened for a preset first time;
the audio adjusting module is used for determining the air pressure change condition within the preset first time length according to the first air pressure value and the second air pressure value, and adjusting the audio signal played through the earphone based on the air pressure change condition; the audio adjusting module is specifically configured to:
calculating to obtain an amplitude weakening value corresponding to the first air pressure value according to the functional relation between the first air pressure value and a preset first air pressure and amplitude weakening; calculating to obtain a differential pressure compensation value corresponding to the air pressure ratio according to the air pressure ratio of the first air pressure value to the second air pressure value and a function relation between preset air pressure change and differential pressure compensation; and taking the product of the air pressure ratio and the differential pressure compensation value as a power amplification coefficient, and calculating the product of the amplitude of the audio signal in the time domain and the power amplification coefficient to obtain the adjusted audio signal.
9. A terminal device, comprising:
one or more processors;
memory having one or more programs stored thereon that, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 1-7.
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| CN102609568A (en) * | 2012-01-14 | 2012-07-25 | 吉林大学 | Method for reduction of high frequency pneumatic noise in car |
| CN102711030B (en) * | 2012-05-30 | 2016-09-21 | 蒋憧 | A kind of intelligent audio system for the vehicles and source of sound adjusting process thereof |
| US9047855B2 (en) * | 2012-06-08 | 2015-06-02 | Bose Corporation | Pressure-related feedback instability mitigation |
| CN104661153B (en) * | 2014-12-31 | 2018-02-02 | 歌尔股份有限公司 | A kind of compensation method of earphone audio, device and earphone |
| CN105157754B (en) * | 2015-09-15 | 2018-03-13 | 广东小天才科技有限公司 | Method and system for reminding based on temperature and air pressure detection |
| EP3182407B1 (en) * | 2015-12-17 | 2020-03-11 | Harman Becker Automotive Systems GmbH | Active noise control by adaptive noise filtering |
| US10598797B2 (en) * | 2015-12-29 | 2020-03-24 | Huawei Technologies Co., Ltd. | Switching method and portable electronic device |
| CN107776516A (en) * | 2016-08-24 | 2018-03-09 | 法乐第(北京)网络科技有限公司 | The adjusting method and device of in-vehicle device, the store method and device of shaping modes |
| KR101901799B1 (en) * | 2016-10-05 | 2018-11-07 | 현대자동차주식회사 | Method and apparatus for controlling vehicular user interface |
| CN107147686A (en) * | 2017-02-28 | 2017-09-08 | 深圳市元征科技股份有限公司 | A kind of vehicle monitoring method and equipment |
| KR102137197B1 (en) * | 2018-11-21 | 2020-07-24 | 엘지전자 주식회사 | Sound improvement device of vehicle |
| CN110656842A (en) * | 2019-10-30 | 2020-01-07 | 北京汽车集团越野车有限公司 | Device capable of reducing closing force and ear pressure of car door and car |
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