US-12626681-B2 - Audio processing method for noise-reduction earphone, noise-reduction earphone, device and readable storage medium

US12626681B2US 12626681 B2US12626681 B2US 12626681B2US-12626681-B2

Abstract

Disclosed are an audio processing method for a noise-reduction earphone, a noise-reduction earphone, a device and a readable storage medium. The audio processing method for a noise-reduction earphone includes: obtaining a first sound signal collected by a feedback microphone, and determining a first transfer function corresponding to the first sound signal; obtaining a second sound signal collected by a feedforward microphone, and building a filtered sound signal according to the first transfer function and the second sound signal; and determining an eustachian tube sound signal corresponding to the filtered sound signal, performing ear blocking elimination processing on the eustachian tube sound signal to obtain a target sound signal, and outputting the target sound signal.

Inventors

Kai Yu
Shanshan JIAO
Yang Hua

Assignees

GOERTEK TECHNOLOGY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20240415
Priority Date: 20211129

Claims (6)

1 . An audio processing method for a noise-reduction earphone, comprising: obtaining a first sound signal collected by a feedback microphone, and determining a first transfer function corresponding to the first sound signal; obtaining a second sound signal collected by a feedforward microphone, and building a filtered sound signal according to the first transfer function and the second sound signal; and determining an eustachian tube sound signal corresponding to the filtered sound signal, performing ear blocking elimination processing on the eustachian tube sound signal to obtain a target sound signal, and outputting the target sound signal; wherein before the obtaining the first sound signal collected by the feedback microphone, and determining the first transfer function corresponding to the first sound signal, the method comprises: determining the second sound signal collected by the feedforward microphone, and determining a preset compensation value corresponding to the second sound signal; and compensating the second sound signal according to the preset compensation value to obtain a compensation sound signal, outputting the compensation sound signal, and controlling the feedback microphone to collect the first sound signal comprising the compensation sound signal; wherein the determining the preset compensation value corresponding to the second sound signal comprises: calculating a background noise according to the first sound signal and the second sound signal, obtaining a preset compensation value interval, determining a matching compensation value matching the background noise in the preset compensation value interval, and configuring the matching compensation value as the preset compensation value corresponding to the second sound signal; wherein the preset compensation value interval is in a range from 10 dB to 20 dB.
2 . The audio processing method for the noise-reduction earphone according to claim 1 , wherein the determining the first transfer function corresponding to the first sound signal comprises: determining a transfer function from the second sound signal to the first sound signal, and configuring the transfer function as the first transfer function.
3 . The audio processing method for the noise-reduction earphone according to claim 1 , wherein the building the filtered sound signal according to the first transfer function and the second sound signal comprises: determining an amplitude and a phase of the first transfer function, and performing filtering processing on the second sound signal according to the amplitude and the phase of the first transfer function to obtain the filtered sound signal.
4 . The audio processing method for the noise-reduction earphone according to claim 1 , wherein the determining the eustachian tube sound signal corresponding to the filtered sound signal comprises: superimposing the first sound signal and the filtered sound signal to obtain the eustachian tube sound signal.
5 . An audio processing device for the noise-reduction earphone, comprising: a memory; a processor; and an audio processing program for the noise-reduction earphone stored on the memory and executable by the processor; wherein when the audio processing program for the noise-reduction earphone is executed by the processor, the audio processing method for the noise-reduction earphone according to claim 1 is implemented.
6 . A non-transitory readable storage medium, wherein an audio processing program for the noise-reduction earphone is stored on the non-transitory readable storage medium, and when the audio processing program for the noise-reduction earphone is executed by a processor, the audio processing method for the noise-reduction earphone according to claim 1 is implemented.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation application of International Application No. PCT/CN2021/139379, filed on Dec. 18, 2021, which claims priority to Chinese Patent Application No. 202111438107.0, filed on Nov. 29, 2021, entitled “AUDIO PROCESSING METHOD FOR NOISE-REDUCTION EARPHONE, NOISE-REDUCTION EARPHONE, DEVICE AND READABLE STORAGE MEDIUM”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present application relates to the technical field of earphones, and in particular to an audio processing method for a noise-reduction earphone, a noise-reduction earphone, a device and a readable storage medium. BACKGROUND Most earphones currently on the market use a single noise-reduction mode. No matter whether the environment of the user is quiet or noisy, when active noise-reduction is performed, the earphones will adopt a same mode to offset the noise in the low frequency band. As for this earphone noise-reduction mode, in a quiet environment, if the low-frequency noise is reduced, the user will have a sense of negative pressure, resulting in an uncomfortable wearing experience. In addition, different users have different sensitivity to sounds with different frequencies, and there may be differences between the left and right ears. The existing products are not designed to be compatible with the different characteristics of users, so it is difficult to achieve a noise-reduction effect and experience that all users are satisfied with. SUMMARY The main purpose of the present application is to provide an audio processing method for a noise-reduction earphone, a noise-reduction earphone, a device and a readable storage medium, aiming to solve the technical problem of how to improve the noise-reduction effect of the earphone. In order to achieve the above objectives, the present application provides an audio processing method for a noise-reduction earphone. The audio processing method for a noise-reduction earphone includes the following steps: obtaining a first sound signal collected by a feedback microphone, and determining a first transfer function corresponding to the first sound signal;obtaining a second sound signal collected by a feedforward microphone, and building a filtered sound signal according to the first transfer function and the second sound signal; anddetermining an eustachian tube sound signal corresponding to the filtered sound signal, performing ear blocking elimination processing on the eustachian tube sound signal to obtain a target sound signal, and outputting the target sound signal. In an embodiment, before the obtaining the first sound signal collected by the feedback microphone, and determining the first transfer function corresponding to the first sound signal, the method includes: determining the second sound signal collected by the feedforward microphone, and determining a preset compensation value corresponding to the second sound signal; andcompensating the second sound signal according to the preset compensation value to obtain a compensation sound signal, outputting the compensation sound signal, and controlling the feedback microphone to collect the first sound signal including the compensation sound signal. In an embodiment, the determining the preset compensation value corresponding to the second sound signal includes: calculating a background noise according to the first sound signal and the second sound signal, obtaining a preset compensation value interval, determining a matching compensation value matching the background noise in the preset compensation value interval, and configuring the matching compensation value as the preset compensation value corresponding to the second sound signal. In an embodiment, the determining the first transfer function corresponding to the first sound signal includes: determining a transfer function from the second sound signal to the first sound signal, and configuring the transfer function as the first transfer function. In an embodiment, the building the filtered sound signal according to the first transfer function and the second sound signal includes: determining an amplitude and a phase of the first transfer function, and performing filtering processing on the second sound signal according to the amplitude and the phase of the first transfer function to obtain the filtered sound signal. In an embodiment, the determining the eustachian tube sound signal corresponding to the filtered sound signal includes: superimposing the first sound signal and the filtered sound signal to obtain the eustachian tube sound signal. In addition, in order to achieve the above objectives, the present application further provides a noise-reduction earphone including a feedforward microphone, a wind noise elimination module, a feedback microphone, an ear blocking elimination module, and a loudspeaker. An output end of the feedforward microphone is connected to an input end of the wind noi