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Single-channel voice enhancement method and device, storage medium and terminal

A voice enhancement, single-channel technology, applied in voice analysis, telephone communication, instruments, etc., to achieve the effect of fast overall response, protection of original voice quality, and excellent voice quality

Active Publication Date: 2020-12-29
SPREADTRUM COMM (TIANJIN) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is how to effectively suppress whistle-like noise and maintain better voice quality in a short period of time in a single-channel voice call scene

Method used

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  • Single-channel voice enhancement method and device, storage medium and terminal
  • Single-channel voice enhancement method and device, storage medium and terminal
  • Single-channel voice enhancement method and device, storage medium and terminal

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Embodiment Construction

[0032] As mentioned in the background art, the prior art urgently needs a voice enhancement solution applicable to single-channel voice equipment, which can eliminate whistle-like noise in a relatively short period of time while protecting the original voice quality.

[0033] Specifically, when people use mobile devices such as mobile phones for daily calls, they will encounter various noises. Some of them, such as the whistle of vehicles and the roar of factory machines, are The characteristic of long time introduces a very bad subjective experience to mobile phone calls, which affects the quality of calls.

[0034] Traditional speech enhancement methods have very weak suppression of this kind of noise, and the noise decay time is long.

[0035]In order to solve the above technical problems, an embodiment of the present invention provides a single-channel speech enhancement method, including: performing delay processing on the received input signal to obtain a delayed signal;...

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Abstract

The invention discloses a single-channel speech enhancement method and device, a storage medium and a terminal. The method comprises the following steps: carrying out delay processing on a received input signal so as to obtain a delay signal; preprocessing noise in a current frame signal based on the delay signal to obtain an error signal, wherein the current frame signal is obtained from the input signal; carrying out noise estimation on the error signal and calculating an amplitude spectrum gain function; and calculating a frequency spectrum after speech enhancement according to the error signal and the amplitude spectrum gain function. According to the scheme of the invention, whistling noise can be effectively suppressed in a short time in a single-channel voice call scene, better voice quality can be maintained, and the voice quality of audio equipment such as single-channel voice call equipment, voice recording equipment and the like can be improved.

Description

technical field [0001] The present invention relates to the technical field of voice processing, in particular to a single-channel voice enhancement method and device, a storage medium, and a terminal. Background technique [0002] Various noise scenes are often encountered in real life, among which whistle-like noise is more common. Generally speaking, whistle-like noises include the whistle of cars on the road, the whistle of trains entering the station at railway stations, and the roar of machines in factories. This type of noise is loud and lasts for a long time, which will seriously affect the quality of voice calls. [0003] Today's smartphones typically feature two or more microphones, and this configuration can effectively eliminate whistle-like noise interference through methods such as energy differences between the microphones. [0004] However, for some low-end mobile phones or talking watches equipped with only one microphone, the existing noise reduction solu...

Claims

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Application Information

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IPC IPC(8): G10L21/0232H04M1/725
CPCG10L21/0232
Inventor 纪伟于伟维董斐林福辉
Owner SPREADTRUM COMM (TIANJIN) INC
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