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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[0005] The embodiment of the present application provides an audio processing method, device and storage medium, which ca

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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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[0056] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0057] Before describing in detail the audio processing method provided by the embodiments of the present application, a brief introduction to the application scenarios and implementation environments involved in the embodiments of the present application will be given.

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

[0059] The microphone array is generally uniformly distributed in a circular shape and has the characteristics of omnidirectional acquisition. However, in some application scenarios, it may be desirable to suppress noise in a characteristic area of ​​the microphone array, and collect audio signals in other areas as much as possible. For example, in a se...

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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...

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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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