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Method and device for real-time voice noise reduction

A technology of noise reduction and equipment, applied in the direction of voice analysis, instruments, etc., can solve the problems of overall voice quality degradation, limit the application of spectral subtraction, damage voice quality, etc., achieve good real-time voice noise reduction processing effect, eliminate random noise, reduce damage effect

Active Publication Date: 2019-01-11
BEIJING OAK PACIFIC NETSCAPE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional spectral subtraction degrades speech quality while improving speech quality, and produces annoying "musical noise"
Although spectral subtraction can successfully eliminate noise in speech, the overall quality of speech has declined due to the introduction of "musical noise", and listeners can often find that the "music noise" in the speech processed by spectral subtraction is greater than that of the original speech signal. The noise in is clearer, thus severely limiting the application of spectral subtraction

Method used

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  • Method and device for real-time voice noise reduction
  • Method and device for real-time voice noise reduction
  • Method and device for real-time voice noise reduction

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Embodiment Construction

[0029] The flowchart and block diagrams in the figures illustrate the architecture, functionality and operation of possible implementations of apparatuses, methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that contains one or more logic devices for implementing the specified Executable instructions for a function. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and / or flowchart illustrations, and combinations of blocks in the block diagrams and / or flowchart i...

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Abstract

The embodiment of the invention relates to a method and device for reducing the noise of a speech in real time. Particularly, the method comprises the steps of carrying out framing on real-time speech data, setting a dynamic energy threshold value, obtaining a stable noise spectrum on the basis of the dynamic energy threshold value, generating speech data with the noise reduced on the basis of the spectral subtraction, and eliminating random noise left in the speech data with the noise reduced. Meanwhile, the embodiment of the invention provides the device corresponding to the method. By using the method and device, the noise of the real-time speech can be reduced, the quality of the speech can not be damaged, and therefore good user experience can be obtained.

Description

technical field [0001] Various embodiments of the present invention generally relate to the field of speech processing, and more specifically, various embodiments of the present invention relate to a method and device for real-time noise reduction of speech. Background technique [0002] With the popularity of voice communication, voice as an important communication medium has been widely valued. At present, in speech communication systems, spectral subtraction is commonly used to denoise speech. However, traditional spectral subtraction improves the speech quality while impairing the speech quality, and produces annoying "musical noise". Although spectral subtraction can successfully remove noise in speech, the overall quality of speech has declined due to the introduction of "musical noise". The noise in is clearer, thus severely limiting the application of spectral subtraction. [0003] Therefore, it is desirable to provide a method and device that can apply spectral s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0272
Inventor 朱宝
Owner BEIJING OAK PACIFIC NETSCAPE TECH DEV