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Sound source tracking method, sound source tracking device and computer readable storage medium

A sound source orientation and sound source technology, applied to direction finders using ultrasonic/sonic/infrasonic waves, systems for determining direction or offset, etc., can solve problems such as low efficiency in tracking and positioning, and achieve effective positioning and extraction. Noise impact, work efficiency improvement effect

Inactive Publication Date: 2018-06-12
XIAN TCL SOFTWARE DEV
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a sound source tracking method, a sound source tracking device, and a computer-readable storage medium, aiming at solving the technical problem of low efficiency of microphone array in far-field sound pickup and low efficiency of tracking and positioning in real time

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  • Sound source tracking method, sound source tracking device and computer readable storage medium
  • Sound source tracking method, sound source tracking device and computer readable storage medium
  • Sound source tracking method, sound source tracking device and computer readable storage medium

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[0074] The sound source tracking terminal converts the sample audio signal and converts the analog signal into a digital signal through the built-in multi-channel sound synchronization acquisition module and sends it to the DSP (digital signal processing technology) chip. The DSP chip calculates the short-term energy and short-time zero crossing of the sample audio signal rate; each frame is denoted as, n=1, 2, ... N, n is the discrete audio signal time sequence, N is the frame length, and i is the number of frames. Then the energy threshold of each frame of audio signal is:

[0075]

[0076] And the zero-crossing rate threshold of each frame of audio signal is:

[0077]

[0078] That is, Ei and Zi are respectively the energy threshold and the zero-crossing rate threshold of the sample audio signal.

[0079] Step S20, detecting and collecting burst audio signals according to the energy threshold and the zero-crossing rate threshold;

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Abstract

The invention discloses a sound source tracking method, a sound source tracking device and a computer readable storage medium. The method comprises the steps that an energy threshold value and a zero-crossing rate threshold value are acquired; a burst audio signal is detected and collected according to the energy threshold value and the zero-crossing rate threshold value; analysis is conducted onthe burst audio signal to obtain sound source direction information of the burst audio signal; a sound collection direction of a terminal is determined according to the sound source direction information. According to the method, threshold restriction is conducted on the burst audio signal, and sound source detection of a burst voice terminal is enhanced, so that emergency response can be made onan emergency to prevent interference of a noisy sound source and improve accuracy and timeliness of voice tracking and voice recognition, noise influences are reduced, multi-sound-source direction measuring is achieved, effective positioning and extracting on audio information of the sound source can be conducted, and working efficiency of the sound source tracking device is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of sound source tracking, in particular to a sound source tracking method, a sound source tracking device and a computer-readable storage medium. Background technique [0002] At present, in the field of hotel security monitoring, large-scale report venues, news sites and many other spatial scenarios, microphone arrays are usually required for far-field sound pickup to track the voice of the speaker in the scene. [0003] However, the existing microphone array has the following defects. There is no sudden voice endpoint detection, it cannot be used as an emergency response to emergencies, and it is easily disturbed by noise from other sound sources, thereby affecting the effect of far-field sound pickup, causing the microphone array to be in the position The accuracy and real-time performance of voice tracking are reduced to a certain extent, which leads to the inability of the microphone array to co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/802
CPCG01S3/802
Inventor 田拓来意哲
Owner XIAN TCL SOFTWARE DEV
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