WO2021103260A1

WO2021103260A1 - Control method for headphones and headphones

Info

Publication number: WO2021103260A1
Application number: PCT/CN2019/129523
Authority: WO
Inventors: 丁智慧
Original assignee: 歌尔股份有限公司
Priority date: 2019-11-28
Filing date: 2019-12-28
Publication date: 2021-06-03
Also published as: CN110972012A

Abstract

Disclosed are a pair of headphones and a control method for the headphones, comprising: acquiring in real-time or at regular intervals an output audio signal, the output audio signal comprising an audio signal outputted by speakers of a pair of headphones; acquiring the sound pressure level of the output audio signal; when the sound pressure exceeds a preset comfortable sound pressure level range, processing, on the basis of a target amplitude corresponding to the comfortable sound pressure level range, an audio signal to be played back; and controlling the speakers to output the processed audio signal to be played back. The present application, when the sound pressure level of the audio signal collected exceeds the preset sound pressure level range, adjusts the audio signal to be outputted so that the outputted audio signal falls within the comfortable sound pressure level range, thus reducing hearing damage caused by the headphones to the ears of a user.

Description

Control method of earphone and earphone

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on November 28, 2019, with the application number 201911217041.5 and the application name "Headphone Control Method and Headphone", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of earphones, and in particular to a method for controlling earphones and earphones.

Background technique

When the user uses headphones, environmental noise generally affects the user’s headphones use effect, and the output audio signal is generally adjusted to make the sound pressure of the headphones within a comfortable sound pressure range; but because users tend to manually increase the volume or ambient memory In a sharp environment signal, the sound pressure of the output audio signal increases beyond the comfortable sound pressure range, resulting in damage to the user's ears.

Summary of the invention

The main purpose of this application is to provide a method for controlling earphones and earphones, which aim to reduce the damage to the ears of users by adjusting the sound pressure of the earphones.

To achieve the foregoing objective, the present application provides a method for controlling earphones, which is applied to earphones, and the method for controlling earphones includes:

Acquire an output audio signal in real time or at a fixed time, where the output audio signal includes the audio signal output by the speaker of the earphone;

Acquiring the sound pressure level of the output audio signal;

When the sound pressure level exceeds the preset comfortable sound pressure level interval, processing the audio signal to be played according to the target amplitude corresponding to the comfortable sound pressure level interval;

Controlling the speaker to output the processed audio signal to be played.

Optionally, the step of obtaining the sound pressure level of the output audio signal includes:

Acquiring the signal power of the output audio signal;

The sound pressure level is determined according to the signal power.

Optionally, when the sound pressure level exceeds a preset comfortable sound pressure level interval, the step of processing the audio signal to be played according to the target amplitude corresponding to the comfortable sound pressure level interval includes:

When the sound pressure level exceeds the preset comfortable sound pressure level interval, acquiring the target signal power corresponding to the comfortable sound pressure level interval;

Determining the target amplitude according to the target signal power;

The audio signal to be played is processed according to the target amplitude.

Optionally, after the step of obtaining the sound pressure level of the output audio signal, the method for controlling the earphone further includes:

Acquiring the duration of the sound pressure level when the sound pressure level is within a preset comfortable sound pressure level interval;

When the duration is greater than the preset duration, reducing the amplitude of the audio signal to be played;

Controlling the speaker of the earphone to output the audio signal to be played after the amplitude is reduced.

Optionally, the method for controlling the headset further includes:

Real-time or regular collection of environmental noise signals;

Determining a reference noise signal according to the current operating mode of the earphone and the environmental noise signal;

The speaker is controlled to output a reverse signal of the reference noise signal to reduce noise.

Optionally, the step of determining a reference noise signal according to the current operating mode of the headset and the environmental noise signal includes:

When the current operating mode is the playback mode, use the collected environmental noise signal as the reference noise signal;

When the current operating mode is the call mode, the human voice signal in the environmental noise signal is filtered to obtain a real noise signal, and the real noise signal is used as the reference noise signal.

Optionally, the headset includes a gesture sensor, and the control method of the headset further includes:

Acquiring sensor data detected by the gesture sensor, and determining gesture parameters according to the sensor data;

Acquiring the target mode of the headset according to the gesture parameter;

Control the headset to switch to the target mode.

In addition, in order to achieve the above-mentioned object, this application also proposes a headset. The headset includes a speaker, a microphone, a memory, a processor, and a control program of the headset stored on the memory and running on the processor. The microphone and the speaker are connected to the processor, and the control program of the headset is executed by the processor as described above.

Optionally, a gesture sensor is provided on the headset, and the gesture sensor includes an ultrasonic sensor, a vibration sensor, or a touch sensor.

Optionally, a fingerprint collection module is integrated in the gesture sensor.

The earphone control method and earphone proposed in this application detect the audio signal output by the speaker of the earphone in real time or regularly, and adjust the audio signal to be output when the sound pressure level of the collected audio signal exceeds a preset sound pressure level interval, and The output audio signal is within the comfortable sound pressure level range, and the hearing damage caused by the earphone to the user's ear is reduced.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is a part of the drawings of this application. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.

Figure 1 is a schematic diagram of the hardware architecture of the headset involved in this application;

FIG. 2 is a schematic flowchart of an exemplary embodiment 1 of a method for controlling a headset of this application;

FIG. 3 is a schematic flowchart of an exemplary embodiment 3 of a method for controlling a headset of this application;

FIG. 4 is a schematic flowchart of the fourth exemplary embodiment of a method for controlling a headset of this application.

The realization of the objectives, functional characteristics and advantages of the application will be further described in conjunction with the embodiments and with reference to the drawings.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

Referring to FIG. 1, FIG. 1 is a schematic diagram of the hardware architecture of the headset involved in the headset control method of this application.

As shown in FIG. 1, the headset may include a microphone 110, a speaker 120, a processor 130, and a memory 140. The memory 140 can store the control program and operating system of the headset, and can also store the comfort sound pressure level interval and the comfort sound pressure level interval correspondence. The signal frequency.

The headset disclosed in this embodiment may be provided with a gesture sensor. The gesture sensor includes an ultrasonic sensor, a vibration sensor, or a touch sensor. The processor is connected to the gesture sensor, and the gesture parameter is determined according to the sensor data detected by the gesture sensor, and according to the determined gesture parameter Control, such as switching the mode of the headset. A fingerprint acquisition module can be integrated in the gesture sensor, and the processor recognizes the user's identity information according to the fingerprint information collected by the fingerprint acquisition module to improve security.

When the control program of the earphone in the memory 140 is executed by the processor, the following steps are implemented:

Acquire the output audio signal collected by the microphone in real time or at a fixed time, where the output audio signal includes the audio signal output by the speaker of the earphone;

Acquiring the sound pressure level of the output audio signal;

When the sound pressure level exceeds the preset comfort sound pressure level interval, the target audio signal is processed according to the signal power corresponding to the comfort sound pressure level interval, and the target audio signal is the input audio signal of the speaker of the earphone.

Referring to FIG. 2, FIG. 2 is a schematic flowchart of an exemplary embodiment of a method for controlling a headset of the present application. In this embodiment, the method for controlling the headset includes the following steps:

Step S10: Obtain an output audio signal in real time or at a timing, where the output audio signal includes the audio signal output by the speaker of the earphone;

A microphone can be provided in the front cavity of the headset, that is, the microphone is located in the direction of the speaker of the headset, so that the output audio signal detected by the microphone includes the audio signal output by the speaker of the headset. Since the headset tends to reduce the noise of the headset during operation, the output audio signal detected by the microphone may only include the audio signal output by the speaker of the headset; however, due to the existence of noise reduction errors and the presence of sudden noise in the environment, the microphone captures The output audio signal may include a small amount of noise signal. Alternatively, the audio signal input to the speaker can be directly used as the output audio signal.

Step S20, acquiring the sound pressure level of the output audio signal;

In the technical solution disclosed in this embodiment, the sound pressure level can be determined by the detected signal power of the output audio signal, that is, step S20 includes: obtaining the signal power of the output audio signal; determining the sound pressure level according to the signal power. Pressure level.

The mapping relationship between signal power and sound pressure level can be preset, and the mapping relationship can be realized by means of curves, tables, and formulas; the mapping relationship between power interval and sound pressure level can also be set, that is, the power interval where the signal power is determined, and The sound pressure level corresponding to the power interval is taken as the sound pressure level of the output audio signal.

Step S30, when the sound pressure level exceeds the preset comfortable sound pressure level interval, process the audio signal to be played according to the target amplitude corresponding to the comfortable sound pressure level interval;

Comfortable sound pressure can be set according to demand. Generally, the comfortable sound pressure level range can be less than 70 decibels. In order to further improve user comfort, the comfortable sound pressure level range can be 40 decibels to 70 decibels. However, due to different earphone structures and different users The comfortable sound pressure level range can be adjusted to some extent.

In the technical solution disclosed in this embodiment, step S30 includes: when the sound pressure level exceeds a preset comfortable sound pressure level interval, acquiring a target signal power corresponding to the comfortable sound pressure level interval; according to the target signal power Determining the target amplitude; processing the audio signal to be played according to the target amplitude.

The signal power is related to the assignment of the signal. After the frequency of the audio signal is determined, the amplitude of the audio signal can be determined, and the audio signal to be played by the earphone is processed according to the amplitude, that is, the amplitude of the audio signal to be played is adjusted to the determined amplitude value. The amplitude of the audio signal can be adjusted by adjusting the gain of the signal, that is, the signal is amplified or reduced, and the target amplitude is determined according to the signal power corresponding to the comfortable sound pressure level interval, and according to the target amplitude and the current signal to be played The amplitude of, determines the gain coefficient, and the signal to be played is amplified or reduced according to the determined gain coefficient.

Step S40, controlling the speaker of the earphone to output the processed audio signal to be played.

In the technical solution disclosed in this embodiment, an amplifier can be arranged between the processor of the earphone and the speaker, and the audio signal to be played can be processed by adjusting the gain coefficient of the amplifier, and the adjusted audio signal output by the amplifier can be transmitted to the earphone. It is understandable that the amplifier can also be a virtual module located in the processor, and the processor calls the amplifier module to process the audio signal to be played, and transmits the processed audio signal to the speaker of the earphone for playback.

The audio signal to be played in this embodiment may include the music signal in the memory or the audio signal transmitted by other terminal devices connected to the earphone. For example, when the user passes by, the audio signal to be played is transmitted from the mobile phone to the earphone.

In the technical solution disclosed in this embodiment, the audio signal output by the speaker of the earphone is detected in real time or regularly, and when the sound pressure level of the collected audio signal exceeds a preset sound pressure level interval, the audio signal to be output is adjusted so that the output The rear audio signal is located in the comfortable sound pressure level range, reducing the hearing damage caused by the earphones to the user's ears.

Example two

Based on the first embodiment, the second embodiment of the method for controlling the earphone of the present application is proposed. In this embodiment, after step S20, the method further includes

Control the to-be-played audio signal after the output amplitude of the speaker of the earphone is reduced

Since the user’s ears in the same sound pressure environment last longer than the preset time, it will also cause damage to the user’s ears. Therefore, when the user is in the same sound pressure environment for a long time, the sound pressure level in the environment can be affected. During the adjustment, in order to avoid damage to the user's hearing, the amplitude of the target audio signal is often reduced to reduce the sound pressure level. It can be understood that when the amplitude of the target audio signal is reduced, the preset adjustment value can be adjusted. For example, if the preset is adjusted to m and the current assignment is k, the adjusted amplitude is km, which can also be adjusted according to the adjustment percentage, for example, If the adjustment percentage is 10%, the amplitude of the target audio signal after adjustment is 90% of the amplitude of the audio signal before adjustment. The preset duration in this embodiment may be 30 minutes.

It is understandable that when the sound pressure level is within the preset comfortable sound pressure level interval, when the sound pressure level does not exceed the preset sound pressure level interval, the timing is continued, and when the sound pressure level exceeds the preset sound pressure level When it is in the interval, reset the timer and re-timing. The preset sound pressure level interval can be updated when re-timing. The preset sound pressure level interval can be determined by the sound pressure level at the time of re-timing, that is, the sound pressure at the time of re-timing. If the level is H, the preset sound pressure interval is updated from Hm to H+m, and m is the preset value. When the timing duration reaches the preset duration, it is determined that the duration of the current sound pressure level reaches the preset duration.

In the technical solution disclosed in this embodiment, when a certain sound pressure level lasts longer than a preset time period, the sound pressure level is reduced by reducing the amplitude to reduce the hearing damage to the user.

Example three

Referring to FIG. 3, the third embodiment of the method for controlling the earphone of the present application is proposed based on the first embodiment or the second embodiment. In this embodiment, the method for controlling the earphone further includes:

Step S50, collecting environmental noise signals in real time or regularly;

Step S60, determining a reference noise signal according to the current operating mode of the earphone and the environmental noise signal;

Step S70, controlling the horn to output a reverse signal of the reference noise signal to reduce noise.

In the technical solution disclosed in this embodiment, the earphone can be subjected to noise reduction processing to improve user experience while reducing environmental noise in the audio signal collected by the microphone. During noise reduction, the output reverse signal and the reference noise signal have a phase opposite to that of the reference noise signal. A microphone can be set in the shell or back cavity of the headset to collect ambient noise signals.

There are different environmental noises in different environments. When the user is in the call mode, the noise signal detected by the earphone shell or the microphone in the back cavity can include the user’s voice signal and actual noise signal in the environment, and the earphone is in the playback mode. If only the audio signal is played, the collected environmental noise only includes the actual noise signal, and different noise processing methods need to be adopted for different modes. That is, step S90 includes: when the current operating mode is the playback mode, collecting The received environmental noise signal is used as the reference noise signal; when the current operating mode is the call mode, the human voice signal in the environmental noise signal is filtered to obtain a real noise signal, and the real noise signal is used as The reference noise signal.

The extraction of real noise signals can be achieved in many ways. For example, the ambient noise signals can be collected in the operation of the headset for deep learning to generate a deep learning model, and the collected environmental noise signals can be input into the deep learning model to obtain real environmental noise signals ; Or, when the frequency of the human voice signal is within a certain range, the environmental noise signal can be filtered according to the frequency of the human voice signal to obtain the real noise signal; while in the playback mode, the environmental noise often does not exist in the user's voice, then The collected environmental noise signal can be directly used as the reference noise signal. .

Example four

Referring to FIG. 4, the fourth embodiment of the method for controlling the earphone of the present application is proposed based on the third embodiment. In this embodiment, the earphone includes a gesture sensor, and the method for controlling the earphone further includes:

Step S80, acquiring sensor data detected by the gesture sensor, and determining gesture parameters according to the sensor data;

Step S90: Acquire the target mode of the headset according to the gesture parameter;

Step S100, controlling the headset to switch to the target mode.

In the technical solution disclosed in this embodiment, the gesture sensor may include an ultrasonic sensor, a vibration sensor, or a touch sensor, and a fingerprint collection module may be integrated in the gesture sensor to identify the user's identity.

The following ultrasonic fingerprint sensor is taken as an example for description (the implementation principle of other gesture sensors refers to the ultrasonic fingerprint sensor). The ultrasonic sensor sends out an ultrasonic signal. When the feedback signal is detected, it obtains the fingerprint information collected by the fingerprint acquisition module and sends the fingerprint information to the processing. The processor determines the gesture parameter (at least one of the number and duration) according to the time point of the feedback ultrasonic signal detected by the ultrasonic sensor. For example, when the detected feedback ultrasonic signal is a continuous signal, the processor determines the duration of the continuous signal. When the received feedback ultrasonic signal is an intermittent signal, determine the number of times the feedback ultrasonic signal is detected within the preset time interval; when the gesture parameter matches the preset gesture parameter, the fingerprint information can be compared with the preset fingerprint information, When the fingerprint information matches the preset fingerprint information, the target mode of the headset is acquired according to the gesture parameter. It is understandable that when the ultrasonic sensor is not integrated with the fingerprint acquisition module, when the gesture parameter matches the preset gesture parameter, the target mode of the headset can be acquired according to the gesture parameter.

Different gesture parameters can be set for different modes, that is, when a gesture parameter is detected, the mode corresponding to the gesture parameter can be obtained, and the mode can be used as the target mode; or, the switching gesture parameters and the switching sequence of each mode can be set, such as The double-tap gesture, when detecting the double-tap gesture, the target mode is determined according to the current mode and the preset switching sequence.

In the technical solution disclosed in this embodiment, the mode of the headset is not limited to the above-mentioned call mode and playback mode, but can also include other modes, such as wake-up mode. The headset can be switched from sleep mode to wake-up mode through preset gesture parameters.

In the technical solution disclosed in this embodiment, the mode of the earphone can be switched by the gesture sensor, and it is not necessary to resort to other terminals provided with a display screen, such as a mobile phone, which is very convenient.

The present application also proposes a computer-readable storage medium on which a control program of the headset is stored. When the control program of the headset is executed by a processor, the method for controlling the headset as described in the above embodiment is implemented.

The various embodiments in this specification are described in a parallel or progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant details can be found in the description of the method section.

Those of ordinary skill in the art can also understand that the units and algorithm steps of the examples described in the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the hardware and software Interchangeability, in the above description, the composition and steps of each example have been generally described in accordance with the function. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The steps of the method or algorithm described in the embodiments disclosed in this document can be directly implemented by hardware, a software module executed by a processor, or a combination of the two. The 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 disks, removable disks, CD-ROMs, or all areas in the technical field. Any other known storage media.

It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is any such actual relationship or order between. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.

Claims

A method for controlling earphones, applied to earphones, characterized in that the method for controlling earphones includes:

Acquire an output audio signal in real time or at a fixed time, where the output audio signal includes the audio signal output by the speaker of the earphone;

Acquiring the sound pressure level of the output audio signal;

When the sound pressure level exceeds the preset comfortable sound pressure level interval, processing the audio signal to be played according to the target amplitude corresponding to the comfortable sound pressure level interval;

Controlling the speaker to output the processed audio signal to be played.
5. The method for controlling earphones according to claim 1, wherein the step of obtaining the sound pressure level of the output audio signal comprises:

Acquiring the signal power of the output audio signal;

The sound pressure level is determined according to the signal power.
The method for controlling earphones according to claim 1, wherein when the sound pressure level exceeds a preset comfortable sound pressure level interval, the sound pressure level is treated according to the target amplitude corresponding to the comfortable sound pressure level interval. The steps of audio signal processing include:

When the sound pressure level exceeds the preset comfortable sound pressure level interval, acquiring the target signal power corresponding to the comfortable sound pressure level interval;

Determining the target amplitude according to the target signal power;

The audio signal to be played is processed according to the target amplitude.
The method for controlling the earphone according to claim 1, wherein after the step of obtaining the sound pressure level of the output audio signal, the method for controlling the earphone further comprises:

Acquiring the duration of the sound pressure level when the sound pressure level is within the preset comfortable sound pressure level interval;

When the duration is greater than the preset duration, reducing the amplitude of the audio signal to be played;

Controlling the speaker of the earphone to output the audio signal to be played after the amplitude is reduced.
5. The method for controlling earphones according to claim 1, wherein the method for controlling earphones further comprises:

Real-time or regular collection of environmental noise signals;

Determining a reference noise signal according to the current operating mode of the earphone and the environmental noise signal;

The speaker is controlled to output a reverse signal of the reference noise signal to reduce noise.
5. The method for controlling earphones according to claim 5, wherein the step of determining a reference noise signal according to the current operating mode of the earphone and the environmental noise signal comprises:

When the current operating mode is the playback mode, using the collected environmental noise signal as the reference noise signal;

When the current operating mode is the call mode, the human voice signal in the environmental noise signal is filtered to obtain a real noise signal, and the real noise signal is used as the reference noise signal.
8. The method for controlling the earphone according to claim 6, wherein the earphone includes a gesture sensor, and the method for controlling the earphone further comprises:

Acquiring sensor data detected by the gesture sensor, and determining gesture parameters according to the sensor data;

Acquiring the target mode of the headset according to the gesture parameter;

Control the headset to switch to the target mode.
An earphone, characterized in that the earphone includes a speaker, a microphone, a memory, a processor, and a control program of the earphone that is stored on the memory and can run on the processor, and the microphone and the speaker are connected with The processor is connected, and the control program of the earphone is executed by the processor according to the method for controlling the earphone according to any one of claims 1-7.
8. The headset of claim 8, wherein a gesture sensor is provided on the headset, and the gesture sensor includes an ultrasonic sensor, a vibration sensor, or a touch sensor.
The headset of claim 8, wherein the gesture sensor is integrated with a fingerprint collection module.