Transient noise detection method, device and equipment

A technology of transient noise and preset duration, applied in the audio field, can solve problems such as insufficient accuracy and abrupt changes in energy, and achieve the effect of improving accuracy

Active Publication Date: 2020-02-25
TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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Problems solved by technology

However, the starting position of the speech signal, that is, the point where the speech occurs, also has a similar characteristic of abrupt energy changes in a certain period of time, and the accuracy of sampling the existing technology is not high enough.

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  • Transient noise detection method, device and equipment
  • Transient noise detection method, device and equipment
  • Transient noise detection method, device and equipment

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[0079] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, 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 fall within the protection scope of this application.

[0080] The implementation of the technical solutions of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0081] First of all, a transient noise detection method provided by the present application is introduced below, see Figure 1 to Figure 7 .

[0082] see first figure 1 , figure 1 It is a schematic flowchart of a transient noise detection method provided in the embodiment of the present application. l...

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Abstract

The invention relates to the technical field of audios, and provides a transient noise detection method. The method comprises the following steps of acquiring an audio frame signal with a preset duration; performing wavelet decomposition on the first audio frame signal to obtain a first wavelet decomposition signal corresponding to the first audio frame signal, wherein the first wavelet decomposition signal comprises a plurality of sub-wavelet decomposition signals; determining first reference audio intensity values of the first sub-wavelet decomposition signals according to reference audio intensity values of all sample points in the first sub-wavelet decomposition signals; determining energy distribution information of the first wavelet decomposition signal according to first reference audio intensity values of all the sub-wavelet decomposition signals in the first wavelet decomposition signal; and determining a probability that the first audio frame signal is a transient noise according to the energy distribution information of the first wavelet decomposition signal. By implementing the embodiment, the sample points in the wavelet packet decomposition signal are counted, so thatthe accuracy of transient noise detection is improved.

Description

technical field [0001] The present application relates to the field of audio technology, in particular to a transient noise detection method, device and equipment. Background technique [0002] Voice is a means of human-computer interaction, but noise interference exists in the working environment all the time, and these noises will affect the application effect of voice, so it is necessary to detect the noise for further processing. [0003] In the prior art, the detection method of the transient noise is mainly based on the characteristics of the short-term energy of the transient noise, and analyzes the energy of the signal within a period of time. If there is a sudden change in the signal energy, the The signal is detected as transient noise. However, the starting position of the voice signal, that is, the point where the voice occurs, also has a similar characteristic of abrupt energy changes in a certain period of time, and the accuracy of sampling in the prior art is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/02G10L25/03G10L25/51
CPCG10L19/0216G10L25/03G10L25/51G10L21/0216G10L19/025G10L25/18G10L25/21
Inventor 张超鹏
Owner TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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