Voice enhancement system

A voice enhancement and voice signal technology, applied in voice analysis, transducer circuits, instruments, etc., can solve the problems that cannot be widely applied, and achieve good denoising effect

Inactive Publication Date: 2012-05-16
TSINGHUA UNIV
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Problems solved by technology

This method uses multi-subband processing technology, although it can also achieve a certain denoising effect, but because it is still based on the estimation of subband SNR, it cannot be widely applied to various noise types

Method used

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Embodiment

[0046] refer to image 3 , shows a structural diagram of a speech enhancement system of the present invention, the system specifically includes:

[0047]The voice acquisition module 301 includes two microphones, wherein one microphone is placed near the target sound source; the other microphone is placed at the far end of the target sound source; the acquisition module is used to collect two voice signals;

[0048] The speech enhancement technology proposed by the invention adopts two-way microphones, and thus belongs to a kind of microphone array speech enhancement technology.

[0049] The distribution structure of the microphone array in the speech collection part is as follows: Figure 4 shown. One of the microphones is placed near the target sound source, and the other microphone is placed at the far end of the target speaker.

[0050] Preferably, the voice collection module 301 also includes the following submodules:

[0051] The filtering sub-module 3011 is used to b...

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Abstract

The invention provides a voice enhancement system. A specific double microphone structure is used to simulate hearing scene analytical capability of human ears so as to realize voice enhancement. And the voice enhancement system has a characteristic of being independent of a noise type and can be widely applied for voice enhancement in various noise environments. A principle of calculation on a hearing scene analysis is utilized to enable target voice to be separated from background noises, so that denoising is realized; and therefore, it can be realized that the voice enhancement is independent of a concrete type of the noise, the number of various noise sources, a topological structure of space between a target sound source and a noise source; and moreover, a good denoising effect is realized and the good voice quality can be ensured.

Description

technical field [0001] The invention relates to the technical field of speech enhancement, in particular to a speech enhancement system. Background technique [0002] Speech enhancement technology is applied to voice communication in a noisy environment, which can improve the quality of the call; applied to man-machine dialogue, it can improve the accuracy of recognition. Under various noise environments in people's daily life, people often prefer to obtain voice information after noise reduction processing. According to the number of channels, the voice enhancement method can be divided into single microphone voice enhancement and microphone array enhancement technology. Traditional single-microphone speech enhancement techniques, such as spectral subtraction and Wiener filtering, etc., all estimate the noise amplitude or energy first, and then subtract it from the noisy speech. For stationary noise such as white noise, certain effects can be achieved, but for non-station...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02G10L19/00H04R3/00H04R25/00G10L21/0208
Inventor 梁维谦胡奎杨华中蒋毅陈卓
Owner TSINGHUA UNIV
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