A voice signal processing method and device

Abstract

The invention discloses a speech signal processing method and apparatus and belongs to the signal processing technical field. With the speech signal processing method and apparatus adopted, the angle of target speech can be estimated accurately, and therefore, the target speech can be effectively enhanced, and noise and interference signals in other directions can be attenuated or shielded. According to the technical schemes of the invention, the method includes the following steps that: at least three beams corresponding to at least three microphones are determined; the incidence angle of a target sound source in a current sound field is determined by means of the combination of at least two microphones; angle deviation between the incidence angle of the target sound source and the center angle of each of the at least three beams is calculated; the protection angle gain of each beam is calculated according to the angle deviation between the incidence angle of the target sound source and the center angle of each of the at least three beams; the multi-beam weighted gain of speech signals is calculated according to the protection angle gain of each of the at least three beams; and the speech signals of the least three microphones are outputted in a weighted manner. The speech signal processing method and apparatus of the present invention are applied to the processing process of speech signals.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a voice signal processing method and device. Background technique [0002] When a voice device is collecting voice signals, it will inevitably be interfered by various noises. Common noises generally include: reverberation noise and directional interference sound source noise. These noises are likely to interfere with the target voice signal and reduce the target voice signal. the quality of. Therefore, in the process of speech signal processing, it is particularly important to suppress reverberation noise and directional interference sound source noise. [0003] Among them, directional pickup is a commonly used technology for suppressing directional interference sound source noise. Directional pickup refers to picking up the target signal in the mixed signal according to the direction of the sound source, that is, only pick up the sound signal propagating in a specif...

AI Technical Summary

Problems solved by technology

[0005] However, the number of microphones in various existing electronic terminals (such as mobile phones) is limited (three microphones are configured in a general mobile phone), and due to the limited volume of the electronic terminal, the distance between the microphones configured in the electronic terminal is also relatively large. small; therefore, the incident angle of the target sound source cannot be accurately estimated using the existing directional pickup algorithm

Moreover, in the prior art, the main beam is generally directly aimed at the estimated incident angle of the target sound source for directional pickup; therefore, when the estimated incident angle of the target sound source is inaccurate, not only cannot effectively enhance the speech signal, but also attenuate or Shielding noise and interference signals from other directions will also damage the voice signal, resulting in distortion of the voice signal

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