Sound source localization method and system based on arrival angle and sound intensity matching

A sound source localization and sound intensity technology, applied in positioning, radio wave measurement systems, measuring devices, etc., can solve the problems of complex implementation and large positioning errors

Pending Publication Date: 2021-09-10
上海数川数据科技有限公司
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Problems solved by technology

This method uses energy features to identify sound sources, and has strong noise filtering energy, but the implementation is more complicated.
Because the sound signal strength is greatly affected by the environment, the positioning error is large in non-ideal environments

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  • Sound source localization method and system based on arrival angle and sound intensity matching
  • Sound source localization method and system based on arrival angle and sound intensity matching
  • Sound source localization method and system based on arrival angle and sound intensity matching

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] A sound source localization method based on arrival angle and sound intensity matching, the method comprises the following steps:

[0032] S1: The sound sensor collects the surrounding sound source signals through the built-in microphone array, and outputs a sequence of sound signal intensity vectors (referred to as sound intensity vectors) in all directions and angles in two-dimensional space;

[0033] S2: The sound sensor sends the sound intensity vec...

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Abstract

The invention relates to the technical field of sound source localization, and in particular, relates to a sound source localization method and system based on arrival angle and sound intensity matching, wherein the method comprises the following steps: sound sensors collect surrounding sound source signals through a built-in microphone array; and a sound signal intensity vector (sound intensity vector for short) sequence in each direction angle of the two-dimensional space is outputted. Synchronization of data acquired by a plurality of sound sensors is realized by using a software algorithm, so that complex digital signal processing and time synchronization technologies are not needed during implementation, the equipment cost can be effectively reduced, matching and identification of the sound source signals are realized by using a sound energy attenuation model, an effective sound source can be effectively captured, and the filtering of environmental noise is realized; moreover, a sound source localization algorithm is simple and effective, the sound sensors are convenient and flexible to deploy, the sound source localization precision can be further improved by increasing the density of the sound sensors; and meanwhile, the system is high in fault-tolerant capability and high in reliability.

Description

technical field [0001] The invention relates to the technical field of sound source localization, in particular to a sound source localization method and system based on matching of arrival angle and sound intensity. Background technique [0002] The sound source localization technology uses a microphone to pick up the voice signal, and applies digital signal processing technology to process the voice signal, so as to determine the position of the sound source relative to the microphone. Sound source localization technology has wide application and research prospects in the fields of video conferencing systems, environmental noise detection, and robot speech recognition. [0003] At present, the sound source localization technology can be divided into three categories: time difference of arrival (TDOA: Time Difference of Arrival) localization method, angle of arrival (AOA: Angle of Arrival) localization method, and received signal strength localization method. [0004] The ...

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Application Information

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IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 李新李征宇赵宇迪施侃
Owner 上海数川数据科技有限公司
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