Speech enhancement system and method for active noise reduction system

A voice enhancement and active noise reduction technology, applied in voice analysis, sounding equipment, instruments, etc., can solve the problems of voice distortion, loss of useful sound source, etc., and achieve the effect of improving performance, reducing loss, and good voice fidelity

Pending Publication Date: 2021-02-05
江苏清微智能科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a speech enhancement system and method for an active noise reduction system to solve the problem that the active noise reduction method in the prior art will lose useful sound sources and cause speech distortion

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  • Speech enhancement system and method for active noise reduction system
  • Speech enhancement system and method for active noise reduction system
  • Speech enhancement system and method for active noise reduction system

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[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0042] Such as Figure 1-3 As shown, the embodiment of the present invention provides a speech enhancement method for an active noise reduction system, including: a noise source 10, a signal source 20, a microphone array 30, a time delay estimation module 40, a time delay compensation module 50, an adaptive beamforming module 60, an error sensor ...

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Abstract

The invention discloses a voice enhancement system and method for an active noise reduction system, and belongs to the technical field of noise control and intelligent voice. The system comprises a noise source capable of outputting a noise signal, a signal source capable of outputting a voice signal, a microphone array capable of collecting the noise signal, a time delay estimation module capableof calculating time delay between microphones through a generalized cross-power spectrum algorithm, a time delay compensation module which can perform time delay compensation on the noise signal according to the received time delay information, an adaptive beam forming module which can obtain a noise estimation value and a target signal estimation value, an error sensor which can output an errorsignal, an adaptive filter which can output an offset noise signal, a noise cancelling loudspeaker, and a voice enhancement module capable of obtaining an enhanced voice signal. According to the invention, the problem of voice distortion caused by loss of a useful sound source in an active noise reduction method in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of noise control and intelligent voice, and in particular relates to a voice enhancement system and method for an active noise reduction system. Background technique [0002] Active noise reduction usually uses electro-acoustic devices to generate offset noise with equal amplitude and anti-phase with the original noise, so that the two can physically cancel each other in space, thereby forming a quiet sound field. When there is a useful signal, the traditional active noise reduction method will cancel the useful signal, and while improving the signal-to-noise ratio, it will often distort the speech. Contents of the invention [0003] The purpose of the present invention is to provide a speech enhancement system and method for an active noise reduction system, so as to solve the problem in the prior art that the active noise reduction method will lose useful sound sources and cause speech distortion. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216G10L25/30G10L25/87G10L19/26G10K11/178
CPCG10L21/0216G10L25/30G10L25/87G10L19/26G10K11/17854G10K11/17817G10L2021/02166
Inventor 康洪涛欧阳鹏尹首一
Owner 江苏清微智能科技有限公司
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