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Dynamic quantity sound source tracking method based on microphone array

A technology of microphone array and sound source, which is applied in measuring devices, electrical digital data processing, special data processing applications, etc. It can solve problems that are difficult to apply and ignore, and achieve the effect of ensuring real-time performance and reducing computing time

Active Publication Date: 2016-05-18
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, this approach ignores many other possibilities that exist in the actual situation
Moreover, the scene where the existing multi-sound source tracking method is applied is an ideal environment, that is, assuming that the number of sound sources is known and does not change during the tracking process, which means that the speaker will continuously Speaking, this limitation makes it difficult for existing multi-sound source tracking algorithms to be applied to actual scenarios

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  • Dynamic quantity sound source tracking method based on microphone array
  • Dynamic quantity sound source tracking method based on microphone array
  • Dynamic quantity sound source tracking method based on microphone array

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0055] In order to solve the above-mentioned technical problems, the first embodiment of the present invention provides a dynamic quantity sound source tracking method based on a microphone array, such as Figure 5 As shown, an 8-element circular microphone array is arranged in the center of the listening room, and each array element uses a balanced test microphone to receive spatial sound field information, and the microphones of each channel are connected to the phantom power supply outside the listening room through a Canon head , and connected to a PC computer through a multi-channel data acquisition card. Since a single microphone array is used in this embodiment, the search space for beamforming is a three-dimensional spatial orientation cente...

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Abstract

The invention relates to a dynamic quantity sound source tracking method based on a microprocessor array. The method comprises the following steps: using a beam-forming algorithm to process a microphone array receiving signal and calculate a spatial spectrum; calculating the matching probability of spatial spectrum peaks and tracking sound sources so as to realize data association between the spatial spectrum peaks and the tracking sound sources; updating the particle weight of each tracking sound source and updating sound source positions according to the matching result; detecting the probability that the spectrum peaks are judged to be new sound sources, activating particle filters of the new sound sources and evaluating the possibility that the particle filters exist; monitoring the active states of the tracking sound sources and deleting non-active sound sources. By using the method, multi-target real-time tracking with a dynamic sound source quantity can be realized, and the method is widely applied in complex scenes such as human-machine interaction, teleconferences and virtual reality.

Description

technical field [0001] The invention relates to a method in the field of array audio signal processing, in particular to a multi-sound source tracking method based on data association and particle filtering. Background technique [0002] In many applications of sound source localization and tracking, such as human-computer interaction, teleconferencing, virtual reality, etc., it is necessary to locate and track the speaker in the application scene. Due to the interference of noise, reverberation and other sound sources in the actual application scene, how to complete the real-time positioning and tracking of the speaker in a complex environment and ensure the robustness of the system has always been a research hotspot. In addition, due to the non-stationary nature of the speech signal itself, the randomness of the silence and active states of the sound source makes this problem even more challenging. [0003] At present, the localization and tracking technology for a single...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01S5/22
CPCG01S5/22G16Z99/00
Inventor 江晓波蒋三新应忍冬刘佩林
Owner SHANGHAI JIAO TONG UNIV
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