Sound source positioning method and system

The invention relates to a sound source positioning method and system. The method comprises the following steps: acquiring an input sound signal of each microphone of a microphone array; calculating the time difference of sound source signals reaching the microphones according to the input sound sig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CAI XICHANG, DONG ZHE, BAI WENLE, LIU DUXIN, YU DONGCHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The invention relates to a sound source positioning method and system. The method comprises the following steps: acquiring an input sound signal of each microphone of a microphone array; calculating the time difference of sound source signals reaching the microphones according to the input sound signals of the microphones; calculating a coarse positioning position of the sound source in a coarse positioning space according to the time difference of the sound source signal reaching the microphone; calculating a fine positioning position of a sound source in a fine positioning space according to an input sound signal of each microphone and the coarse positioning position, wherein the coarse positioning space and the fine positioning space are spherical spaces which take the microphone array as a sphere center and are composed of a plurality of discrete points, the discrete points are vertexes of the spherical spaces, and the number of the discrete points in the coarse positioning space is smaller than that of t