Speech enhancement method and device applicable to strong noise environments

A voice enhancement and strong noise technology, applied in the field of signal processing, can solve the problems of poor sound quality and poor effect of non-air conduction voice sensors, and achieve the effect of good voice quality, good naturalness, and strong anti-noise ability.
CN103208291AInactive Publication Date: 2013-07-17SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2013-07-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a speech enhancement method and device applicable to strong noise environments. The method comprises establishing an air conduction speech sensor speech detection and non-air conduction speech sensor speech detection combined model under a clean environment; estimating a noise model of a currently received air conduction speech sensor speech detection signal according to a speech signal detected by a non-air conduction speech sensor; correcting parameters of the combined model by using the obtained noise model; and enhancing the air conduction speech sensor speech detection signal through the combined model before and after correction, and outputting enhanced speech signals. The device comprises an air conduction speech sensor, the non-air conduction speech sensor, a multi-channel data acquisition module, a noise model estimation module, a combined model correction module, a speech enhancing module and a training and self-adaptive module for the combined model. Compared with the prior art, the speech enhancement method and device have the advantages of being strong in noise immunity, good in speech quality and the like.
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Description

technical field

[0001] The invention relates to the field of signal processing, in particular to a speech enhancement method and device which can be used in a strong noise environment. Background technique

[0002] Speech is the most natural means of human communication, but in practical applications such as voice communication and speech recognition, there are often various environmental noises. When these environmental noises are strong, it will seriously affect the quality of voice communication and the correct rate of recognition. For example, in noisy environments such as factories and assemblies, not only the sound quality and intelligibility of voice communication will deteriorate significantly, but also the recognition rate of speech recognizers will drop sharply.

[0003] Speech enhancement is a commonly used method to reduce the impact of environmental noise and improve the quality of voice communication. It can also be used for preprocessing of speech before reco...

Claims

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