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Audio processing method, device and 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: 2022-04-15
HANGZHOU HIKVISION DIGITAL TECH
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  • 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

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  • Audio processing method, device and storage medium
  • Audio processing method, device and storage medium
  • Audio processing method, device and 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 application discloses an audio processing method, device and storage medium, belonging to the technical field of speech processing. The method includes: obtaining a plurality of beamforming coefficient matrices corresponding to multiple audio sampling frequency points, the obtained multiple beamforming coefficient matrices are determined based on a target fan-shaped area selected from a circular area corresponding to the microphone array, and the multiple beamforming The coefficient matrix is ​​used to control the audio signal collected in the audio collection area referred to by the target fan-shaped area to be in a mute state, respectively determine the frequency domain signals of the audio signal collected by each microphone in the microphone array at multiple audio sampling frequency points, and set Each beamforming coefficient matrix is ​​used as the coefficient of the frequency domain signal of each microphone at the corresponding audio sampling frequency point, and the determined frequency domain signal is transformed to obtain the target audio signal. In the present application, the audio signal of the target fan-shaped area that needs to be muted can be suppressed without affecting the audio signal that needs to be collected.

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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Patent Type & Authority Patents(China)
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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