Voice denoising processing method and device, computer device and storage medium

Abstract

The invention relates to a voice denoising processing method, a voice denoising processing device, a computer device and a storage medium. The voice denoising processing method comprises the followingsteps: when detecting that the distance between a voice collecting device and a target object achieves a preset value, acquiring a noisy voice signal collected by the voice collecting device, and carrying out frequency division processing on the noisy voice signal, so that a low-frequency-band signal is obtained; acquiring a magnitude spectrum and a phase spectrum of the low-frequency-band signal; acquiring a modulation domain signal corresponding to the magnitude spectrum; processing a magnitude spectrum or a power spectrum of the modulation domain by adopting a spectrum subtraction method,thus obtaining the magnitude spectrum or power spectrum of the modulation domain after denoising; compensating the phase spectrum of the modulation domain, thus obtaining the phase spectrum of the modulation domain after compensating; and based on the phase spectrum of the modulation domain after compensating, the magnitude spectrum of the modulation domain after denoising, and the phase spectrumof the low-frequency-band signal, acquiring a low-frequency-band signal after denoising, wherein the low-frequency-band signal after denoising is used for synthesizing a denoising voice signal. Due toa smooth over-subtraction factor adopted by the spectrum subtraction method, the problem that abundant voice information is eliminated due to the oversize smooth over-subtraction factor is avoided.

Description

technical field [0001] The present application relates to the technical field of speech noise reduction, and in particular to a speech noise reduction processing method, device, computer equipment and storage medium. Background technique [0002] Noise has a great impact on speech acoustic analysis and characteristics. Various noises produce various noises in the spectrogram, which leads to the inaccurate identification and analysis of acoustic features. In the speech transmission system, the noise will cover the speech and affect whether the speech content can be heard clearly, and the excessive noise will cause the speech recognition rate to drop. For noise interference, voice noise reduction processing is required to reduce the impact of noise on voice and highlight the characteristics of voice. [0003] During the implementation process, the inventor found at least the following problems in the traditional technology: In the traditional method, there is a problem of too...

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Problems solved by technology

[0003] During the implementation process, the inventor found that there are at least the following problems in the traditional technology: In the traditional method, there is the problem of excessive voice message elimination

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