Voice source direction finding method and apparatus

A technology for direction finding devices and sound sources, which is applied to measuring devices, direction finders using ultrasonic/sonic waves/infrasonic waves, and directional devices for measuring directions. The effect of resolution

Active Publication Date: 2017-02-01
SOUNDAI TECH CO LTD
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Problems solved by technology

When there are multiple sound sources, although the MUSIC algorithm can improve the resolution, it needs to decompose the eigenvalue of the autocorrelation matrix, and the computational complexity increases

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  • Voice source direction finding method and apparatus
  • Voice source direction finding method and apparatus
  • Voice source direction finding method and apparatus

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity ...

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Abstract

The embodiments of the invention provide a steady voice source direction finding method and apparatus. The method comprises the following steps: based on sound signals acquired by a microphone array, obtaining a beam pattern of each time-frequency slice and performing clustering on extreme points of the beam patterns so as to obtain a direction of a voice source, wherein one beam pattern is obtained for each time frequency slice through assuming that only one voice source signal plays a major role at each time frequency slice. The method and apparatus can convert the problem of multiple sound sources into a problem of single-source direction estimation, and also improves the resolution while simplifying the operation amount.

Description

technical field [0001] The sound source localization technology of the present invention, more specifically, relates to a method and device for measuring the direction of a voice sound source. Background technique [0002] Direction of arrival (DOA) estimation is an important technology in array signal processing, and has important applications in radar, sonar, voice and other fields. Especially for intelligent hardware that can be used for voice interaction, robust DOA estimation is needed to determine the direction of the speaker, and then beamforming technology can be used to enhance the speaker's voice. [0003] At present, the DOA estimation of the speech sound source mainly utilizes the time delay estimation two-step method. The first step is to calculate the correlation function between the microphone pair, and the time corresponding to the extreme point of the correlation function is the delay between the arrival of the sound wave between the two microphones. When ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/808
CPCG01S3/8083
Inventor 冯大航陈孝良常乐苏少炜
Owner SOUNDAI TECH CO LTD
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