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Speech denoising method and device

A technology for speech denoising and speech signal, applied in speech analysis, instruments and other directions, can solve the problems of large amount of calculation, unresolved, high CPU usage, achieve small amount of calculation, fast calculation speed, and meet the effect of real-time denoising

Active Publication Date: 2020-08-14
ADVANCED NEW TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned denoising methods all have the problem of a large amount of calculation, because the relatively large amount of calculation will inevitably lead to a relatively high cpu occupancy rate during real-time denoising, and the performance of smart terminals is difficult to meet the requirements of real-time denoising
[0005] For how to reduce the CPU usage while ensuring the denoising effect, no effective solution has been proposed yet

Method used

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  • Speech denoising method and device
  • Speech denoising method and device

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0025] figure 1 It is a method flowchart of an embodiment of a speech denoising method described in this application. Although the present application provides method operation steps or device structures as shown in the following embodiments or accompanying drawings, more or less operation steps or module units may be included in the met...

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Abstract

The application provides a voice denoising method and device. The method includes the following steps: carrying out an FFT (Fast Fourier Transform) on a voice signal to be denoised, and obtaining amplitudes and phases at multiple frequency ranges; on the basis of band-to-noise power and noise power of each frequency range, obtaining a noise inhibitory factor of each frequency range through calculation; multiplying the amplitude of each frequency range by the corresponding noise inhibitory factor, and obtaining an amplitude of each frequency range after denoising; and carrying out an IFFT (Inverse Fast Fourier Transform) by means of the phases obtained through the FFT and the amplitudes after denoising, and obtaining a denoised voice signal. Through the technical scheme, a voice denoising effect can satisfy requirements, the computational complexity is low, the calculating speed is fast, and thus the voice denoising method and device can meet real-time denoising requirements.

Description

technical field [0001] The present application belongs to the technical field of speech processing, and in particular relates to a speech denoising method and device. Background technique [0002] When sending voice messages, background noise is unavoidable, effectively removing noise can improve voice quality. And as the use of smart terminals becomes more and more popular, voice chat and the like become more and more common, so voice denoising becomes more and more important. [0003] In view of the fact that voice denoising plays an important role in voice chat, it can reduce environmental noise and improve voice quality. square error method, etc. [0004] However, the above-mentioned denoising methods all have the problem of a large amount of calculation, because a relatively large amount of calculation will inevitably lead to a relatively high cpu occupancy rate during real-time denoising, and the performance of smart terminals cannot meet the requirements of real-tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L25/21
CPCG10L21/0208G10L21/0216G10L25/21
Inventor 杜志军
Owner ADVANCED NEW TECH CO LTD
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