Microphone array having a second order directional pattern
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United States of America Patent
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Jun 20, 2006
Issued Date -
N/A
app pub date -
Sep 28, 2001
filing date -
Sep 29, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A directional microphone system is disclosed, which comprises circuitry for low pass filtering a first order signal, and circuitry for high pass filtering a second order signal. The system further comprises circuitry for summing the low pass filtered first order signal and the high pass filtered second order signal. A method of determining whether a plurality of microphones have sufficiently matched frequency response characteristics to be used in a multi-order directional microphone array is also disclosed. For a microphone array having at least three microphones, wherein one of the microphones is disposed between the other of the microphones, a method of determining the arrangement of the microphones in the array is also disclosed.
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