Wave signal processing system and method
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United States of America Patent
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Mar 4, 2008
Grant Date -
Dec 4, 2003
app pub date -
Jan 21, 2003
filing date -
May 29, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides wave signal processing systems and methods that estimate a wave source direction and use that information to realize sharp directivity even in the case of a device that is compact or that has limited calculating capacity. A wave signal processing system of the present invention is provided with at least one sensor group made of at least two sensors, determines a difference signal between wave signals detected by any two sensors in at least one of the sensor groups and determines a differential signal of a wave signal detected by at least one sensor, and based on a combination of a sign of the difference signal and a sign of the differential signal and a positional relationship of the sensors, determines the sign of a delay time between the wave signals that are detected by the two sensors and determines the direction of the wave source based on whether the sign of the delay time is positive or negative.
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