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Audio processing method and device as well as storage medium

An audio processing and audio technology, applied in speech analysis, instruments, etc., can solve problems such as unable to collect audio signals

Active Publication Date: 2020-02-14
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides an audio processing method, device and storage medium, which can solve the problem that the required audio signal can no longer be collected due to the shutdown of the microphone array

Method used

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  • Audio processing method and device as well as storage medium
  • Audio processing method and device as well as storage medium
  • Audio processing method and device as well as storage medium

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0057] Before introducing the audio processing method provided by the embodiment of the present application in detail, the application scenario and implementation environment involved in the embodiment of the present application are briefly introduced.

[0058] First, the application scenarios involved in the embodiments of the present application are briefly introduced.

[0059] Microphone arrays are generally evenly distributed in a circular shape, and have the characteristics of omnidirectional collection. However, in some application scenarios, it may be desirable to suppress noise in a certain characteristic area of ​​the microphone array and collect audio signals in other areas as much as possible. For example, in a securi...

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Abstract

The invention discloses an audio processing method and device as well as a storage medium, and belongs to the technical field of voice processing. The method comprises the following steps of acquiringbeam-forming coefficient matrixes corresponding to a plurality of audio sampling frequency points, wherein the acquired plurality of beam-forming coefficient matrixes are determined on the basis of atarget fan-shaped region selected from a circular region corresponding to a microphone array, and are used for controlling audio signals acquired in an audio acquisition region specified by the target fan-shaped region to be in a mute state; determining a frequency domain signal of the audio signal acquired by each microphone in the microphone array under the plurality of audio sampling frequencypoints; and carrying out transformation processing on the determined frequency domain signals by taking each beam-forming coefficient matrix as the coefficient of the frequency domain signal of eachmicrophone under the corresponding audio sampling frequency point to obtain target audio signals. Through the adoption of the audio processing method and device, the audio signals of the target fan-shaped region needing muting can be suppressed under the situation of not influencing the acquisition of required audio signals.

Description

technical field [0001] The embodiments of the present application relate to the technical field of voice processing, and in particular, to an audio processing method, device, and storage medium. Background technique [0002] At present, a microphone array is widely used in audio signal acquisition, and the plurality of microphones included therein are generally distributed uniformly in a circular shape. In some cases, the audio signal collected by the microphone array may contain noise. For example, in a video conferencing environment, the sound of keyboards on the desktop, rustling of paper, etc. are noises. For this reason, it is usually necessary to perform suppression processing on the audio signal collected by a specific area of ​​the microphone array, that is, to make the audio signal in the specific area in a mute state. [0003] In the related art, a mute button can be set for the microphone array, and when there is noise in the environment, the user can press the m...

Claims

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Application Information

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IPC IPC(8): G10L21/0216
CPCG10L21/0216G10L2021/02166
Inventor 钱能锋陈扬坤陈展
Owner HANGZHOU HIKVISION DIGITAL TECH
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