Reverberation and noise suppression method and device, electronic equipment and storage medium
A noise suppression and reverberation technology, applied in speech analysis, instruments, etc., can solve the problems of speech distortion, noise reverberation residue, indistinguishable reverberation and noise, etc., to improve speech quality and alleviate speech distortion.
Pending Publication Date: 2021-11-30
西安讯飞超脑信息科技有限公司
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[0004] The invention provides a reverberation and noise suppression method, device, electronic equipment and storage medium, which are used to solve the defects in the prior art that reverberation and noise are difficult to distinguish, resulting in speech distortion and noise reverberation residue
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[0042] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. 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.
[0043] There is a large reverberation in the signal received by the microphone, and there is noise in the use environment, which will cause voice distortion, low voice intensity and poor recognition.
[0044] Traditional enhancement methods usually estimate the magnitude spectrum of reverberation and noise first, and then suppress them by means of Wiener filtering. However, the reverberation...
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The invention provides a reverberation and noise suppression method and device, electronic equipment and a storage medium. The reverberation and noise suppression method comprises steps of determining a microphone signal to be suppressed; performing direct signal separation and noise signal separation on the microphone signal to obtain a direct separation result and a noise separation result of the microphone signal; determining a reverberation signal in the microphone signal based on the direct separation result and the noise separation result; and carrying out reverberation and noise suppression on the microphone signal based on the reverberation signal and the noise separation result. According to the method, the reverberation signal in the microphone signal can be determined through the direct separation result and the noise separation result obtained based on microphone signal separation, and reverberation and noise suppression are performed on the microphone signal through the reverberation signal and the noise separation result, so voice distortion is reduced, and the voice quality is improved.
Description
technical field [0001] The invention relates to the technical field of artificial intelligence, in particular to a reverberation and noise suppression method, device, electronic equipment and storage medium. Background technique [0002] In the far-field task, the signal received by the microphone has a large reverberation, and the reverberation component will affect the speech intelligibility, resulting in a decline in the speech recognition rate. In addition, the signal-to-noise ratio is low due to the long distance between the target sound source and the microphone. [0003] In order to remove noise and reverberation, traditional enhancement methods usually first estimate the amplitude spectrum of reverberation and noise, and suppress them by means of Wiener filtering. However, the reverberation and noise estimated by the traditional statistical method are difficult to track the abrupt signal in time, resulting in almost no suppression effect on non-stationary noise. In...
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IPC IPC(8): G10L21/0208G10L21/0216G10L21/0272
CPCG10L21/0208G10L21/0216G10L21/0272G10L2021/02082G10L2021/02163
Inventor 马峰李明子
Owner 西安讯飞超脑信息科技有限公司