Sound source localization tracking device and method based on microphone cross ring array

A sound source localization and tracking device technology, applied in positioning, measuring devices, instruments, etc., can solve the problems of low positioning accuracy, slow tracking response, and high implementation cost, achieving high safety, good trade-off relationship, and low implementation cost Effect

Inactive Publication Date: 2019-04-23
深圳市友杰智新科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The above-mentioned patent documents disclose a microphone array sound source localization method and device, but the device and method have low positioning accuracy, slow tracking response, high implementation cost, and low reliability

Method used

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  • Sound source localization tracking device and method based on microphone cross ring array
  • Sound source localization tracking device and method based on microphone cross ring array
  • Sound source localization tracking device and method based on microphone cross ring array

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Embodiment 1

[0054] see figure 1 , the sound source localization and tracking device based on the microphone cross-ring array includes an audio signal acquisition module 100 for collecting sound signals; an A / D signal conversion module 200 for converting analog signals into digital signals; a voice detection module 300, For detecting the voice signal; the noise reduction processing module 400 is used for noise reduction processing of the voice signal; the bandpass filter 500 is used for filtering the voice signal; the sound source location tracking module 600 is used for realizing the direction of the sound source Tracking; signal output module 700, used for signal output;

[0055] The audio signal acquisition module 100 transmits the voice signal to the voice detection module 300 through the A / D signal conversion module 200; The source location tracking module 600 , the sound source location tracking module 600 outputs the voice signal through the signal output module 700 .

[0056] The...

Embodiment 2

[0061] see figure 2 , image 3 , Figure 4 , the difference from the above-mentioned embodiments is that a method for localization and tracking of a sound source based on a cross-ring array of microphones in the present invention includes the following steps:

[0062] Step 1): Pick up the analog sound signal through the microphone cross array, and output four digital signals;

[0063] Step 2): performing voice endpoint detection S1 on the four digital signals;

[0064] Step 3): performing noise reduction processing S2 on the voice signal;

[0065] Step 4): Filtering the voice signal through a bandpass filter S3;

[0066] Step 5): Carry out delay difference calculation S4 on the voice signal;

[0067] Step 6): Obtain the sound source position S5;

[0068] Step 7): Voice signal output and tracking S6.

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Abstract

The invention discloses a sound source localization tracking device and method based on a microphone cross ring array. The sound source localization tracking device comprises an audio signal acquisition module, an A/D signal conversion module, a speech detection module, a noise reduction processing module, a band-pass filter, a sound source localization tracking module and a signal output module,wherein the audio signal acquisition module transmits a signal to the speech detection module through the A/D signal conversion module; and then the signal is transmitted to the sound source localization tracking module through the noise reduction processing module and the band-pass filter and is then outputted through the signal output module. The method comprises the following steps: 1, pickingup an analog sound signal; 2, detecting a speech endpoint; 5, carrying out noise reduction processing on a speech signal; 4, carrying out filtering processing on the speech signal; 5, calculating delay inequality; 6, acquiring a sound source position; and 7, outputting the speech signal. The invention aims at providing the sound source localization tracking device and method with high positioningaccuracy, fast tracking reaction, low implementation cost and high reliability based on the microphone cross ring array.

Description

technical field [0001] The present invention relates to the technical field of microphone sound source localization, in particular to a sound source localization tracking device and method based on a microphone cross-ring array. Background technique [0002] The microphone array is composed of multiple microphones. Each microphone simultaneously collects and jointly processes the sound signal. While obtaining the time domain and frequency domain information of the signal, it can also obtain the spatial domain (spatial orientation) information of the sound. Using the microphone array and the sound information of the target to obtain the position of the target is an effective localization method. Since the sound picked up by the microphone is a passive detection method, the sound source localization technology based on the microphone array is widely used in military detection, security monitoring, audio / video conference system, human-computer interaction and other fields. [...

Claims

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Application Information

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