Monaural sound source positioning method and system based on auricle conduction characteristics
A technology for sound source localization and sound source orientation, applied in radio wave measurement systems, using re-radiation, measurement devices, etc., can solve problems such as wireless communication, power consumption overhead, etc.
Pending Publication Date: 2021-03-19
XIAMEN UNIV +1
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[0003] However, the above algorithms all need to use two microphones to realize the binaural sound source localization function. For wireless earphone products, it means that the signals and characteristic information required for positioning need to be transmitted wirelessly between the ears, resulting in additional wireless communication, power overhead
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[0040] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.
[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0042] A monaural sound source localization method based on the conduction characteristics of the pinna according to an embodiment of the present invention, figure 1 A flow chart of a monaural sound source localization method based on the conduction characteristics of the pi...
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The invention provides a monaural sound source positioning method and system based on auricle conduction characteristics. The method comprises the steps of respectively setting a plurality of test sound sources to be located at different azimuth or pitch angle positions for playing a test sound source signal in an ideal test environment, and recording the signals collected by a noise microphone asa first receiving signal; converting the first receiving signal and the test sound source signal to a frequency domain by using discrete Fourier transform, and calculating auricle conduction characteristic response for each test sound source; during actual positioning, using the noise microphone for receiving a signal sent by a sound source to be detected, and recording the signal as a second receiving signal; and finally, converting the second received signal and the auricle conduction characteristic response to a frequency domain by using discrete Fourier transform, and estimating the soundsource orientation by using a sparse recovery algorithm. Single-earphone sound source positioning is realized, so that extra communication between binaural earphones and control and hardware overheadcaused by binaural earphone microphone acquisition needed by a traditional binaural sound source positioning method are avoided.
Description
technical field [0001] The invention relates to the technical field of sound source localization, in particular to a monaural sound source localization method and system based on auricle conduction characteristics. Background technique [0002] For wireless earphone products, sound source localization can provide directional information, approaching sound warning and other functions for the earphone noise reduction algorithm by estimating the position of the sound source, which plays an important role in improving the earphone noise reduction performance and improving the user experience. Currently, headphone sound source localization mostly adopts bio-inspired localization algorithms, such as ear spectrum cues and binaural cues: interaural time difference (ITD) and interaural level difference; or directly uses head-related impulse response. [0003] However, the above algorithms all need to use two microphones to realize the binaural sound source localization function. For ...
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IPC IPC(8): G01S11/14
CPCG01S11/14
Inventor 童峰毛连华郭秋涵吴燕艺傅荣杰
Owner XIAMEN UNIV