Audio signal processing method and device and storage medium

An audio signal processing and signal technology, applied in the field of signal processing, can solve the problems of increased cost of microphone products, large performance impact, and sensitivity to microphone position errors.

Pending Publication Date: 2020-09-29
BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
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Problems solved by technology

However, the beamforming technology of multiple microphones is sensitive to microphone position errors and has a gr...

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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

[0087] 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.

[0088] 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:

[0089] 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;

[0090] 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 the steps of acquiring audio signals sent by at least two sound sources by at least twomicrophones 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 at least twosound sources according to the respective original noisy signals of the at least two microphones; determining a frequency point set containing a plurality of predetermined static frequency points anddynamic frequency points in a predetermined frequency band range; determining a weighting coefficient of each frequency point contained in the frequency point set according to the frequency domain estimation signal of each frequency point in the frequency point set; determining a separation matrix of each frequency point according to the weighting coefficient; and based on the separation matrix and the original noisy signal, 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 signal 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): G10L21/02G10L21/0216G10L21/0232G10L21/0272
CPCG10L21/02G10L21/0216G10L21/0232G10L21/0272G10L2021/02165G10L25/18H04R1/406H04R3/005H04R2410/01
Inventor 侯海宁
Owner BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
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