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Audio signal processing method and device and difference beam forming method and device

An audio signal processing and audio signal technology, which is applied in signal processing, voice analysis, loudspeaker, etc., can solve the problem that the audio signal processing device cannot satisfy the audio signal processing at the same time

Active Publication Date: 2015-03-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an audio signal processing method and device, and a differential beamforming method and device to solve the problem that existing audio signal processing devices cannot simultaneously satisfy audio signal processing in various application scenarios

Method used

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  • Audio signal processing method and device and difference beam forming method and device
  • Audio signal processing method and device and difference beam forming method and device
  • Audio signal processing method and device and difference beam forming method and device

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Embodiment 1

[0132] Embodiment 1 of the present invention provides an audio signal processing method, such as figure 1 shown, including:

[0133] S101: Determine super-directional differential beamforming weight coefficients.

[0134] Specifically, the application scenarios involved in the embodiments of the present invention may include various application scenarios such as high-definition calls, audio and video conferences, voice interaction, and spatial sound field recording. According to the audio signal processing methods required by different application scenarios, different Super-directional differential beam forming weight coefficients. In the embodiment of the present invention, the super-directional differential beam is a differential beam constructed according to the geometric shape of the microphone array and a preset beam shape.

[0135] S102: Obtain an audio input signal required by the current application scene, and determine the current application scene and the type of ou...

Embodiment 2

[0147] The audio signal processing method involved in Embodiment 1 of the present invention will be described in detail below with reference to the accompanying drawings.

[0148] 1. Determine the super-directional differential beamforming weight coefficient

[0149] In the embodiment of the present invention, each super-directional differential beamforming weight coefficient corresponding to different output signal types in different application scenarios can be determined according to the geometric shape of the microphone array and the set beam shape, wherein the beam shape is based on different output signal types in different The requirements for the beam shape in the application scenario are determined, or the requirements for the beam shape and the position of the speaker are determined in different application scenarios according to different output signal types.

[0150] In the embodiment of the present invention, when determining the super-directional differential bea...

Embodiment 3

[0245] In the embodiment of the present invention, an audio signal processing method in the process of human-computer interaction and high-definition voice communication that requires monophonic signals is used as an example for illustration.

[0246] like Figure 7 As shown, the flow chart of the audio signal processing method in the process of human-computer interaction and high-definition voice communication provided by the embodiment of the present invention includes:

[0247] S701: Adjust the microphone array so that the end-fire direction of the microphone array points to the target speaker, that is, the sound source.

[0248] In the embodiment of the present invention, the microphone array can be adjusted manually, or automatically adjusted according to the preset rotation angle. The microphone array can also be used to detect the speaker's orientation, and then the end-fire direction of the microphone array can be turned to the target to speak. people. There are many...

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Abstract

The invention discloses an audio signal processing method and device and a difference beam forming method and device to solve the problem that an existing audio signal processing system can not be used for processing audio signals in different application scenes. The audio signal processing method comprises the steps of determining a super-directivity difference beam forming weight coefficient; acquiring the weight coefficient corresponding to the current application scene according to the output signal type required by the current application scene, and conducting super-directivity difference beam forming processing on an audio input signal by means of the acquired weight coefficient, so that a super-directivity difference beam forming signal in the current application scene is obtained; processing the forming signal to obtain a final audio signal required by the current application scene. By the adoption of the audio signal processing method and device and the difference beam forming method and device, the requirement for providing different audio signal processing methods for different application scenes can be met.

Description

technical field [0001] The present invention relates to the field of audio technology, in particular to an audio signal processing method and device, and a differential beamforming method and device. Background technique [0002] With the continuous development of microphone array processing technology, the range of applications for audio signal acquisition using microphone arrays is becoming wider and wider, for example, it can be applied to various application scenarios such as high-definition calls, audio and video conferences, voice interaction, and spatial sound field recording. It will be gradually applied to a wider range of application scenarios such as vehicle systems, home media systems, and video conferencing systems. [0003] Generally, different application scenarios have different audio signal processing devices, and use different microphone array processing technologies. The microphone array of the technology collects the audio signal, and outputs the mono si...

Claims

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Application Information

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IPC IPC(8): G10L19/008G10L21/02G10K11/34
CPCG10L21/02G10L2021/02166H04R1/406H04R2201/025H04R2430/21G10L21/0364G10L2021/02082H04R2201/405
Inventor 李海婷张德明
Owner HUAWEI TECH CO LTD
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