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Sound source positioning method based on dual-microphone array

A technology of sound source localization and dual microphones, which is applied to localization, measurement devices, instruments, etc., can solve the problems of large amount of calculation, high cost, weak positioning accuracy and robustness, etc., and achieves low implementation cost and low calculation amount. , the effect of improving the robustness

Inactive Publication Date: 2019-01-18
深圳市友杰智新科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] With the rise of intelligent voice, microphone array sound pickup technology has gradually become one of the current popular technologies. Microphone array sound pickup technology generally includes two parts: sound source localization and speech enhancement. The existing sound source localization technology has advantages in positioning accuracy and The amount of calculation cannot be well balanced, and the method with higher positioning accuracy often has a large amount of calculation, and the cost of implementation is higher
The calculation method is simple, and its positioning accuracy and robustness are weak in noisy environments

Method used

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  • Sound source positioning method based on dual-microphone array

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Embodiment

[0033] refer to Figure 1-3 In this embodiment, a sound source localization method based on a dual-microphone array is proposed, including the following steps:

[0034] S1: first convert the analog sound signal into two digital sound signals;

[0035] S2: The digital sound signal passes through the speech detection module, and sends the part of the detected human voice to the noise reduction processing module;

[0036] S3: After the human voice signal is denoised, calculate the cross-correlation information of the two signals to obtain the delay difference between the two signals;

[0037] S4: Finally, the position information of the sound source is calculated by using the size of the microphone array and the calculated delay difference.

[0038] In this embodiment, in S1, the analog sound signal is picked up by the dual-mic array hardware, and two digital signals are output, and in S2, the voice endpoint detection is performed on the two digital signals. The specific implem...

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Abstract

The invention discloses a sound source positioning method based on a dual-microphone array. The method comprises the following steps that: S1: firstly, converting a simulated sound signal into two paths of digital sound signals; S2: enabling the digital sound signals to pass through a sound detection module, and sending a detected part with human voice speaking into a denoising processing module;S3: after a human voice signal is subjected to the denoising processing, calculating the mutual correlation information of two paths of signals to obtain the time delay difference of two paths of signals; and S4: finally, utilizing the size of the microphone array and the calculated time delay difference to calculate the position information of the sound source. A calculation amount to which the method relates is small, implementation cost is low, voice denoising processing and score time delay estimation processing are added, and therefore, the robustness of sound source positioning and the accuracy of a positioning angle are improved.

Description

technical field [0001] The present invention relates to the technical field of sound source localization, in particular to a sound source localization method based on a dual-microphone array. Background technique [0002] With the rise of intelligent voice, microphone array sound pickup technology has gradually become one of the current popular technologies. Microphone array sound pickup technology generally includes two parts: sound source localization and speech enhancement. The existing sound source localization technology has advantages in positioning accuracy and The amount of calculation cannot be well balanced, and the method with higher positioning accuracy often has a large amount of calculation, and the cost of implementation is relatively high. The method with a simple calculation amount has weak positioning accuracy and robustness in noisy environments. Contents of the invention [0003] Based on the technical problems existing in the background technology, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 王艳芬
Owner 深圳市友杰智新科技有限公司
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