Sound quality optimization method, feedback noise reduction system, earphone and storage medium

An optimization method and technology of a noise reduction system, applied in the field of noise reduction, can solve problems such as lowering sound quality and signal distortion

Inactive Publication Date: 2018-11-13
GEER TECH CO LTD
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However, this method will cause signal dist

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  • Sound quality optimization method, feedback noise reduction system, earphone and storage medium
  • Sound quality optimization method, feedback noise reduction system, earphone and storage medium
  • Sound quality optimization method, feedback noise reduction system, earphone and storage medium

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[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0025] In the prior art, the useful signal is compensated by an equalizer (EQ, Equalizer), so as to make up for the loss of the useful signal caused by the noise reduction signal. However, this method will cause signal distortion and greatly reduce the sound quality. Aiming at the above-mentioned problems existing in the prior art, the embodiment of ...

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Abstract

The embodiment of the invention provides a sound quality optimization method, a feedback noise reduction system, an earphone and a storage medium. The method comprises the steps that a mixed signal acquired by a microphone in the feedback noise reduction system at present and a useful signal to be sent into a loudspeaker in the feedback noise reduction system at present are acquired; an environment noise signal contained in the mixed signal is acquired according to the mixed signal and a useful signal transmitted to the microphone at present; the environment noise signal contained in the mixedsignal is output to a noise reduction filter in the feedback noise reduction system to allow the noise reduction filter to generate a noise reduction signal corresponding to the environment noise signal; and the noise reduction signal and the useful signal to be sent to the loudspeaker at present are sent to the loudspeaker together to obtain a useful signal which has the lossless sound quality.According to the method, the influences of the feedback noise reduction process on the useful signal can be effectively improved, and the sound quality of the useful signal is guaranteed.

Description

technical field [0001] The present application relates to the technical field of noise reduction, and in particular to a sound quality optimization method, a feedback noise reduction system, earphones and a storage medium. Background technique [0002] Active noise control technology mainly uses the principle of sound wave interference to offset the original noise signal through a noise reduction signal that is equal in value and out of phase with the noise signal. [0003] In the feedback noise reduction system, the microphone is responsible for collecting the sound signal, and the noise reduction filter takes the sound signal collected by the microphone as a noise signal, generates a noise reduction signal that is equivalent to the noise signal, and plays it through the speaker to cancel the noise signal . However, in addition to the environmental noise signal, the sound signal collected by the microphone also includes the useful signal output by the noise reduction earph...

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Application Information

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IPC IPC(8): H04R3/04
CPCH04R3/04H04R2430/00
Inventor 于锴华洋王若蕙
Owner GEER TECH CO LTD
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