Audio signal processing method, device and system for wind noise suppression, and readable medium

Abstract

The invention provides an audio signal processing method, device and system for wind noise suppression, a computer readable medium, and a training method of a wind noise attenuation prediction model based on an artificial neural network. The audio signal processing method for wind noise suppression comprises the following steps: converting an original time domain signal of an input audio into an initial frequency domain signal; predicting a predicted wind noise attenuation gain according to the initial frequency domain signal by using a wind noise attenuation prediction model based on the artificial neural network; determining the final predicted wind noise attenuation gain of the current frequency point signal of the current frame according to the predicted wind noise attenuation gain ofthe current frequency point signal of the current frame and the predicted wind noise attenuation gain of the adjacent frequency point signal of the current frame; performing wind noise suppression onthe initial frequency domain signal based on the final predicted wind noise attenuation gain; and converting the frequency domain signal after wind noise suppression into a time domain signal after wind noise suppression. According to the method, wind noise elimination is performed by adopting the wind noise attenuation prediction model based on the artificial neural network so that the wind noisesuppression effect can be greatly enhanced.

Description

technical field [0001] The present application mainly relates to the field of signal processing, in particular to an audio signal processing method, device, system and computer-readable medium for wind noise suppression, and a training method for a wind noise attenuation prediction model based on an artificial neural network. Background technique [0002] Wind noise is a very complex and difficult to predict noise. When the wind hits the surface of the microphone, these turbulent features formed on the surface near the microphone are collected by the microphone to form wind noise. Many devices that collect sound outdoors are affected by wind noise, such as hearing aids, headsets, mobile phones, handheld video devices, and so on. Especially when the outdoor wind is very strong, wind noise will have a great impact on these devices, causing interference to the devices and resulting in very poor sound quality. [0003] The spectral characteristics and magnitude of wind noise de...

AI Technical Summary

Problems solved by technology

In any case, these traditional algorithms still have the following problems: due to the difficulty of accurately estimating the wind noise power spectrum, there is a large residual wind noise suppression; the wind noise is very unstable in the time domain, making it difficult to track, which may lead to near-end speech noise. Greater distortion or even intermittent

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