Noise estimation method, noise reduction method and electronic equipment

A technology of noise estimation and estimated value, which is applied in the field of audio processing to achieve the effect of ensuring voice quality, tracking speed, and rapid voice damage

Pending Publication Date: 2021-04-30
SUZHOU KEDA TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides a noise estimation method, a noise reduction method, and an electronic device to solve the problem of the balance between noise tracking speed and voice quality

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  • Noise estimation method, noise reduction method and electronic equipment
  • Noise estimation method, noise reduction method and electronic equipment
  • Noise estimation method, noise reduction method and electronic equipment

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Embodiment Construction

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0066] According to an embodiment of the present invention, an embodiment of a noise estimation method is provided. It should be noted that the steps shown in the flow charts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, although in The flowcharts show a logical order, but in som...

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Abstract

The invention relates to the technical field of audio processing, in particular to a noise estimation method, a noise reduction method and electronic equipment, and the noise estimation method comprises the steps: obtaining a to-be-processed audio, and obtaining the fundamental frequency and voice state of the to-be-processed audio; calculating the signal power of each frequency point of the current frame in the to-be-processed audio; determining an audio state of each frequency point of the current frame based on the serial number of each frequency point of the current frame, the fundamental frequency and the voice state; and determining a noise estimation value of each frequency point of the current frame according to the audio state of each frequency point of the current frame and the signal power of each frequency point. Noise estimation is performed based on a fundamental tone tracking mode, so that the voice quality can be ensured; and in combination with the voice state, the tracking speed is ensured, so that the balance between the voice quality and the tracking speed is ensured, and rapid noise estimation with relatively small voice damage is realized.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a noise estimation method, a noise reduction method and electronic equipment. Background technique [0002] In VOIP applications, such as software video conferencing, VOIP teleconferencing, etc., noise reduction plays a vital role, and the performance of its algorithm directly affects the quality of user conference calls. [0003] In theory, noise reduction can be achieved through noise estimation and Wiener filtering. However, in the actual conference scene, there are various types of noise, such as current noise, fan sound, air conditioner sound, keyboard sound, mouse click sound, etc., and the composition of noise is relatively complicated. Therefore, the estimation of noise becomes especially difficult. Therefore, the timeliness and accuracy of noise estimation directly affect the effect of noise reduction. [0004] In the existing technology, the main method to r...

Claims

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Application Information

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IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232
CPCG10L21/0208G10L21/0232G10L21/0216
Inventor 朱赛男赵玉垒修平平浦宏杰鄢仁祥曹李军
Owner SUZHOU KEDA TECH
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