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Audio signal processing method and device and storage medium

An audio signal processing and audio signal technology, applied in the field of signal processing, can solve problems such as increased cost of microphone products, large performance impact, and sensitivity to microphone position errors, so as to improve recognition performance, reduce speech damage, and enhance accuracy. Effect

Active Publication Date: 2020-05-19
ペキンシャオミパインコーンエレクトロニクスカンパニーリミテッド
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AI Technical Summary

Problems solved by technology

However, the beamforming technology of multiple microphones is sensitive to microphone position errors and has a great impact on performance. In addition, the increase in the number of microphones will also lead to higher product costs.

Method used

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  • Audio signal processing method and device and storage medium
  • Audio signal processing method and device and storage medium
  • Audio signal processing method and device and storage medium

Examples

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Embodiment Construction

[0069] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0070] figure 1 is a flow chart of an audio signal processing method shown according to an exemplary embodiment, such as figure 1 shown, including the following steps:

[0071] Step S101, using at least two microphones to acquire audio signals from at least two sound sources respectively, so as to obtain original noisy signals of the at least two microphones;

[0072] Step S102. For each fram...

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Abstract

The invention relates to an audio signal processing method and device and a storage medium. The method comprises: acquiring, by at least two microphones, audio signals sent by at least two sound sources respectively so as to acquire original noisy signals of the at least two microphones respectively; for each frame in the time domain, obtaining respective frequency domain estimation signals of atleast two sound sources according to the respective original noisy signals of the at least two microphones; dividing a predetermined frequency band range into a plurality of harmonic subsets, each harmonic subset containing a plurality of frequency point data; determining a weighting coefficient of each frequency point contained in each harmonic subset according to the frequency domain estimationsignal of each frequency point in each harmonic subset; determining a separation matrix of each frequency point according to the weighting coefficient; and based on the separation matrix and the original noisy signals, obtaining audio signals emitted by the at least two sound sources respectively. Through the method provided by the embodiment of the invention, the voice quality of the audio signals can be improved.

Description

technical field [0001] The present disclosure relates to the field of signal processing, and in particular to an audio signal processing method and device, and a storage medium. Background technique [0002] In related technologies, smart product equipment mostly uses microphone arrays to pick up sound, and uses microphone beamforming technology to improve the quality of voice signal processing, so as to improve the voice recognition rate in real environments. However, the beamforming technology of multiple microphones is sensitive to microphone position errors and has a great impact on performance. In addition, the increase in the number of microphones will also lead to increased product costs. [0003] Therefore, at present, more and more smart product devices are equipped with only two microphones; two microphones often use blind source separation technology that is completely different from multiple microphone beamforming technology to enhance speech, and how to make the...

Claims

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Application Information

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IPC IPC(8): G10L21/0216G10L21/0224G10L21/0232G10L21/0272
CPCG10L21/0216G10L21/0232G10L21/0272G10L21/0224G10L2021/02165G10L2021/02166
Inventor 侯海宁
Owner ペキンシャオミパインコーンエレクトロニクスカンパニーリミテッド
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