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Sound source positioning method, digital signal processing device and audio system

A technology of digital signal processing and sound source location, which is applied in the field of audio system, sound source location method, and digital signal processing device, to achieve the effect of accurately locating the direction of the sound source

Active Publication Date: 2021-07-23
BEIJING HUAJIE IMI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] This application provides a sound source localization method, a digital signal processing device, and an audio system. The azimuth angle where the loudspeaker is located is determined as the azimuth angle of the sound source

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  • Sound source positioning method, digital signal processing device and audio system
  • Sound source positioning method, digital signal processing device and audio system
  • Sound source positioning method, digital signal processing device and audio system

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Embodiment Construction

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0072] The application is applicable to numerous general purpose or special purpose computing device environments or configurations. For example: personal computer, server computer, handheld or portable device, tablet type device, multiprocessor device, distributed computing environment including any of the above devices or devices, etc.

[0073] An embodiment of the present application provides a sound source localization method, which can be applied to a digital signal processing ...

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Abstract

The invention provides a sound source positioning method, a digital signal processing device and an audio system, and the method comprises the steps: repeatedly executing the following steps in a statistical time period, and obtaining a plurality of second azimuth angles; calculating a sound source azimuth angle based on all the obtained second azimuth angles; the method comprises the following steps: acquiring a frame of incident signal and a reference signal currently received by each microphone in a microphone array; calculating a first azimuth angle based on the current incident signal of each frame; judging whether the loudspeaker is in a playing state currently based on any frame of incident signal and the reference signal; and if it is determined that the loudspeaker is not in the playing state currently, determining the first azimuth angle as a second azimuth angle. According to the technical scheme, the playing state of the loudspeaker is judged, so that the first azimuth angles are screened, the first azimuth angles corresponding to the loudspeaker not in the playing state are determined as the second azimuth angles, the azimuth angle of the sound source is calculated on the basis of all the second azimuth angles, and the azimuth angle of the sound source is accurately positioned.

Description

technical field [0001] The present application relates to the technical field of digital signal processing, in particular to a sound source localization method, a digital signal processing device and an audio system. Background technique [0002] Sound source localization technology is one of the basic problems in microphone arrays. Accurate localization results have important application value in many fields such as communication, multimedia, video conferencing and human-computer interaction. [0003] In the existing sound source localization technology, within the statistical time period, the initial azimuth angle is determined based on each frame of the incident signal received by each microphone in the microphone array, and the sound source azimuth is determined based on all initial azimuth angles within the statistical week The azimuth angle of the sound source is usually the azimuth angle with the largest beam power. For an audio system with its own speaker, since the ...

Claims

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Application Information

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IPC IPC(8): G01S5/22
CPCG01S5/22Y02D30/70
Inventor 程佳李骊
Owner BEIJING HUAJIE IMI TECH CO LTD
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