Audio signal processing method and system, audio interaction device and computer equipment

Abstract

The embodiment of the invention discloses an audio signal processing method and system, an audio interaction device and computer equipment. The method includes the following steps: performing echo cancellation on an echo signal in an acquired audio input signal to obtain an audio residual error signal of the audio input signal; performing noise cancellation on a noise signal in the audio residual error signal to obtain an audio enhancing signal after noise cancellation; and performing residual noise signal detection on the audio enhancing signal, and if a residual noise signal exists in the audio enhancing signal, filtering out the residual noise signal. By utilization of the method, the echo signal and the environmental noise signal in the audio input signal during audio interaction can be removed, detection and filtering of residual noise are realized at the same time, influence of environmental noise on an audio interaction process is effectively suppressed, and an effect of cancelling echoes and noise in the audio interaction process is improved, thereby improving the performance of an audio interaction device in cancelling echoes and noise.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of audio signal processing, and in particular to an audio signal processing method, system, audio interaction device, and computer equipment. Background technique [0002] For an intelligent audio interaction device with a voice interaction function, it can not only accept the user's voice instructions through a microphone, but also broadcast feedback information to the user through a speaker. However, the sound broadcast by the speaker to the user will also be collected by the microphone again as an acoustic echo, thereby affecting the recognition and understanding of the user's voice by the interactive device, thereby reducing the working performance of the audio interactive device. In addition, in practical applications, due to the different hardware structures of intelligent audio interactive devices, the distances and installation methods of microphones and speakers are different, ...

AI Technical Summary

Problems solved by technology

[0004] The echo cancellation technology based on the PBFDAF algorithm has been proved to be able to effectively cancel the echo and improve the quality of voice communication in the real-time communication of Internet telephony and web pages. However, the performance of echo cancellation in intelligent audio interactive devices is not satisfactory.

First of all, although the PBFDAF algorithm can reduce the echo generated by the speaker, it is basically ineffective for the environmental noise that also interferes with the intelligent voice interaction; secondly, due to the influence of factors such as the changing environment and echo paths, and different voice interaction scenarios, It is difficult for the adaptive filtering algorithm to converge the estimation error of the filter to an ideal situation, so the effect of eliminating echo and noise cannot meet the requirements of intelligent audio interactive devices

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