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Audio denoising method and device, server and storage medium

An audio and noise frequency technology, applied in the fields of servers, storage media, audio denoising methods and devices, can solve the problems of intermittent sound, affecting users' listening or viewing experience, and unstable audio, so as to avoid intermittent, improve listening experience, The effect of noise floor smoothing

Active Publication Date: 2020-09-01
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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Problems solved by technology

[0003] However, due to the superimposition of keyboard noise and environmental noise in the audio, the corresponding environmental noise will be removed at the same time as the keyboard noise is removed, causing the background noise of the processed audio to appear suddenly large and small, and the sound is intermittent. , affecting the user's listening or viewing experience

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  • Audio denoising method and device, server and storage medium
  • Audio denoising method and device, server and storage medium
  • Audio denoising method and device, server and storage medium

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Embodiment Construction

[0077] In order to enable ordinary persons in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings.

[0078] At present, in some scenarios, users often record audio and video while typing on the keyboard, so that the audio contains relatively stable environmental noise and transient noise of typing the keyboard at the same time. In order to obtain a better audio effect, it is necessary to remove the noise of typing on the keyboard in the audio, for example, the traditional LMS adaptive filter noise reduction algorithm can be used to remove the noise of typing on the keyboard. However, keyboard noise is transient noise, and the noise reduction effect of traditional algorithms is often not ideal. For this reason, in the related art, a neural network model is used to process the keyboard noise ...

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Abstract

The invention relates to an audio denoising method and device, a server and a storage medium. The method comprises the following steps: acquiring a to-be-processed audio signal with noise, wherein theaudio signal comprises transient noise; obtaining estimated amplitude data of a current frame signal in the audio signal with noise, wherein the estimated amplitude data is used for representing an amplitude obtained by estimating the current frame signal after the transient noise is removed; when the estimated amplitude data is smaller than minimum amplitude data, adjusting the estimated amplitude data to obtain target amplitude data of which the amplitude exceeds the minimum amplitude data; and acquiring a target audio signal based on the target amplitude data. According to the embodiment of the invention, the estimated amplitude data is adjusted by using the minimum amplitude data, so that the target amplitude data of which the amplitudes exceed the minimum amplitude data can be obtained, the condition that the bottom noise of the target audio signal is smooth is ensured, the problem of intermittent sound is avoided, and the listening experience is improved.

Description

technical field [0001] The present disclosure relates to the technical field of audio processing, and in particular to an audio denoising method and device, a server, and a storage medium. Background technique [0002] At present, in some scenarios, users often record audio and video while typing on the keyboard, so that the audio contains relatively stable environmental noise and transient noise of typing the keyboard at the same time. In order to obtain a better audio effect, it is necessary to remove the noise of typing on the keyboard in the audio, for example, the traditional LMS adaptive filter noise reduction algorithm can be used to remove the noise of typing on the keyboard. However, keyboard noise is transient noise, and the noise reduction effect of traditional algorithms is often not ideal. For this reason, in the related art, a neural network model is used to process the keyboard noise in the audio, which can obtain a processing effect better than that of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/03G10L25/30G10L21/0208
CPCG10L25/30G10L25/03G10L21/0208Y02D30/70
Inventor 张旭张晨董培
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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