VOICE RECORDING METHOD, DIGITAL PROCESSOR AND MICROPHONE ARRAY SYSTEM
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United States of America Patent
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Issued Date -
Nov 4, 2010
app pub date -
May 1, 2009
filing date -
May 1, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A microphone array system and a method implemented therefore are provided. A first microphone having a first sensibility receives a sound source to generate a first signal. A second microphone is deposited at a distance from the first microphone, having a second sensibility for receiving the sound source to generate a second signal. A comparator subtracts the first signal and the second signal to generate a difference signal. An analyzer estimates an incident angle of the sound source to determine a compensation factor based on the first signal and the difference signal. A gain stage adjusts a gain of the difference signal based on the compensation factor to output an output signal.
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