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Sound source positioning method and device

A sound source localization and sound source technology, applied in the field of communications, can solve the problems of inaccurate location information and inability to locate in all directions.

Pending Publication Date: 2020-07-07
SOUNDAI TECH CO LTD
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Problems solved by technology

[0002] At present, with the popularity of speech recognition technology, more and more smart devices have the functions of voice wake-up and speech recognition. The sound source localization technology based on microphone array has been widely used in speech enhancement and indoor human voice localization. The existing technology Among them, the sound source localization technology based on the microphone array can be roughly divided into three categories: the controllable beamforming technology based on the maximum output power, the high-resolution spectrogram estimation technology and the sound source localization technology based on the time difference. With the advanced sound source localization technology, since the time delay of the calculated sound source is equal to the time delay of the symmetrical point of the sound source, only the position information within the range of 0-180 degrees of the sound source can be obtained, and it cannot be located in all directions. , in this way, the position information obtained by sound source localization is not accurate enough

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Embodiment Construction

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present 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.

[0044] At present, with the popularization of voice recognition technology, more and more smart devices have voice wake-up and voice recognition functions, and, in different application scenarios, the formation of the microphone array used by the voice wake-up function or voice recognition function is also There are many kinds, such as circular array, line array, L-shaped array, etc. Although adding more microphones to the microphone array can provid...

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Abstract

The invention relates to the technical field of communication, in particular to a sound source positioning method and device, and the method comprises the steps: determining the time difference between the first receiving time when a sound source is collected through a first microphone and the second receiving time when the sound source is collected through a second microphone; determining reference position information of the sound source according to the time difference and a preset distance between a first microphone and a second microphone; determining an intensity difference between a first sound intensity of the sound source acquired by the first microphone and a second sound intensity of the sound source acquired by the second microphone; and determining target position informationof the sound source from the reference position information according to the intensity difference, the reference position information and a preset association relationship between the intensity difference and the position information, so the accuracy of sound source positioning can be improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a sound source localization method and device. Background technique [0002] At present, with the popularity of speech recognition technology, more and more smart devices have the functions of voice wake-up and speech recognition. The sound source localization technology based on microphone array has been widely used in speech enhancement and indoor human voice localization. The existing technology Among them, the sound source localization technology based on the microphone array can be roughly divided into three categories: the controllable beamforming technology based on the maximum output power, the high-resolution spectrogram estimation technology and the sound source localization technology based on the time difference. With the advanced sound source localization technology, since the time delay of the calculated sound source is equal to the time delay o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 钱思冲冯大航陈孝良苏少炜
Owner SOUNDAI TECH CO LTD
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