ARRAY MICROPHONE SYSTEM AND A METHOD THEREOF
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United States of America Patent
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Issued Date -
Dec 31, 2009
app pub date -
Jun 26, 2008
filing date -
Jun 26, 2008
priority date (Note) -
Abandoned
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Abstract
An array microphone system of compensating phase drift of input signals and a method thereof. The microphone system comprises a speaker, first and second microphones, a delay estimator, and a memory. The speaker outputs an acoustic signal. The first and second microphones, spaced by a predetermined distance, receive the acoustic signal to generate first and second input signals. The delay estimator, coupled to the first and second microphones, computes a time difference between the first and second input signals. The memory, coupled to the delay estimator, stores the time difference.
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