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Sound source positioning method and system

A technology for sound source localization and sound source orientation, which is used in localization, radio wave measurement systems, measurement devices, etc., can solve problems such as signal loss and poor localization results, and achieve the effect of improving positioning accuracy and locating sound sources conveniently.

Inactive Publication Date: 2015-12-30
TCL CORPORATION
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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method and system for sound source localization, aiming at solving the need to know the number of sound sources in advance in the prior art for sound source localization, when the estimated sound source data and the real number of sound sources When there is a difference, there will be defects such as signal loss and poor positioning results

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  • Sound source positioning method and system

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Embodiment Construction

[0047] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] The present invention provides a flowchart of a preferred embodiment of a sound source localization method, such as figure 1 As shown, the method includes:

[0049] Step S100, preset several independent microphones with the same characteristics to form a microphone array.

[0050] Specifically, the step S100 specifically includes:

[0051] Step S101, presetting several independent microphones with the same characteristics to form a microphone array;

[0052] Step S102 , presetting that the distances between the microphones are the same, and setting the microphone at the center of the microphone array as the array center.

[0053] In spe...

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Abstract

The invention discloses a sound source positioning method and system. The method includes the steps that a plurality of independent microphones with the same characteristic are arranged in advance to form a microphone array; the microphone array receives a target sound source signal and outputs a time domain signal; each frame of data of the output time domain signal is subjected to short time Fourier transformation, and a space spectrum corresponding to each frame of signal is acquired; the sound source number of each frame is estimated through the corresponding space spectrum, and spectrum peak searching is performed on the space spectrums so that a sound source orientation estimation result is obtained; the sound source numbers and the sound source orientation estimation results of the frames of signals are subjected to average statistics, and final sound source orientation and a final sound source estimation result are acquired. On the premise that accurate sound source number information exists, accurate sound source positioning information is obtained, positioning accuracy is improved, and convenience is provided for a user to position a sound source.

Description

technical field [0001] The present invention relates to the technical field of sound source localization, in particular to a method and system for sound source localization. Background technique [0002] The sound source localization system has been extensively studied as early as the 1970s and 1980s. Due to the strong spatial selectivity of the sound source localization, the sound signal of the moving target can be obtained without moving the sensor. At present, the microphone array is more popular, which has been widely used in audio and video conferences, speaker tracking and recognition, etc. occasion. [0003] The positioning problem of the microphone array is to use a group of microphones placed in a certain position to determine the spatial position of the sound source. The more common method is to perform short-time Fourier transform (short-time Fourier transform, referred to as STFT) on the data collected by the array, transform the signal into the frequency domai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 邓雪娟刘卫兵
Owner TCL CORPORATION
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