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Speech signal noise reduction method and device

A voice signal and signal technology, applied in the field of signal processing, can solve problems such as interference and reducing the clarity of effective voice signals

Active Publication Date: 2018-04-20
GEER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the user inputs the voice signal through the microphone on the headset, in addition to the user's voice signal, some noise signals will also be mixed in. These noise signals will interfere with the voice signal input by the user and reduce the clarity of the effective voice signal.

Method used

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  • Speech signal noise reduction method and device

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Embodiment Construction

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] The technical solutions provided by various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] figure 1 It is a schematic flowchart of a speech signal noise reduction method provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes the fol...

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Abstract

The invention provides a speech signal noise reduction method and device. The method comprises the following steps: according to an interference signal associated with an ambient noise signal in an original input signal, filtering the ambient noise signal in the original input signal to obtain a first speech signal; from a speech signal sample library, obtaining a sample signal matched with the first speech signal; and according to the sample signal matched with the first speech signal, filtering other noise signals in the first speech signal to obtain an effective speech signal. The method can effectively filter the ambient noise and other noise signals in the speech signal.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a voice signal noise reduction method and device. Background technique [0002] With the development of science and technology, there are many devices with voice input function, such as mobile phones, robots, voice speakers and so on. When the user inputs the voice signal through the microphone on the headset, in addition to the user's voice signal, some noise signals will also be mixed in. These noise signals will interfere with the voice signal input by the user and reduce the clarity of the effective voice signal. [0003] At present, a least mean square (Least Mean Square, LMS) algorithm is mainly used to perform noise reduction processing on a signal input by a user. The LMS algorithm is mainly used to filter out the environmental noise signal. If the signal input by the user is mixed with other people's voice signals in addition to the environmental noise signal,...

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Application Information

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IPC IPC(8): G10L21/0208
CPCG10L21/0208G10L17/00G10L21/0216G10L2021/02087G10L17/02G10L21/0308
Inventor 陈维亮
Owner GEER TECH CO LTD