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Sound source positioning method and device based on microphone array and computer equipment

A technology for microphone array and sound source localization, which is used in positioning, measuring devices, instruments, etc., and can solve problems such as angle and distance mismatch and low sound source localization accuracy

Active Publication Date: 2020-04-24
深圳市友杰智新科技有限公司
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Problems solved by technology

[0003] The main purpose of this application is to provide a microphone array-based sound source localization method, device and computer equipment, aiming to solve the disadvantages of the existing microphone array-based sound source localization method that the angle and distance do not correspond, and the sound source localization accuracy is low

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  • Sound source positioning method and device based on microphone array and computer equipment
  • Sound source positioning method and device based on microphone array and computer equipment
  • Sound source positioning method and device based on microphone array and computer equipment

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Embodiment Construction

[0069] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0070] refer to figure 1 , An embodiment of the present application provides a sound source localization method based on a microphone array, the microphone array includes two microphone sub-arrays, and the sound source localization method includes:

[0071] S1: Obtain the sub-array coordinate system corresponding to each of the microphone sub-arrays, and the common coordinate system corresponding to each of the microphone sub-arrays, and obtain a sound signal;

[0072] S2: Preprocessing the sound signal;

[0073] S3: use the SRP-PHAT algorithm to calculate the preprocess...

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Abstract

The invention provides a sound source positioning method and device based on a microphone array, computer equipment and a computer readable storage medium. The microphone array comprises two microphone sub-arrays. In the positioning process, firstly, a corresponding sub-array coordinate system is established for each microphone sub-array, and a common corresponding common coordinate system is established; then, preprocessed sound signals are calculated by using an SRP-PHAT algorithm to obtain direction vectors respectively corresponding to a sound source in each sub-array coordinate system; and finally, each direction vector is normalized into the common coordinate system, and calculation is performed to obtain a position coordinate of the sound source in the common coordinate system. In the process, a common distance measurement method can be eliminated, so that the angle measurement and the distance measurement of the sound source are carried out at the same time, the miscorrespondence of a sound source angle and a sound source distance due to time delay is effectively avoided, and the sound source positioning accuracy is effectively improved.

Description

technical field [0001] The present application relates to the technical field of sound source localization, in particular to a sound source localization method, device and computer equipment based on a microphone array. Background technique [0002] Sound source localization technology is one of the important technologies of array signal processing. It is currently widely used in many fields such as sonar detection, video conference, artificial intelligence, voice tracking and recognition, and monitoring system. Existing sound source localization methods based on microphone arrays usually use a far-field model to measure the azimuth of the sound source. Then use commonly used ranging methods, such as infrared, ultrasonic and other methods, while infrared, ultrasonic and other transmitting devices need to rely on motor control, and infrared and ultrasonic need to transmit signals from the transmitter and then receive them. The hardware structure and algorithm flow are more co...

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Application Information

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IPC IPC(8): G01S5/04
CPCG01S5/04
Inventor 陈俊彬王广新杨汉丹
Owner 深圳市友杰智新科技有限公司
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