Microphone array having a second order directional pattern

Details Microphone array having a second order directional pattern Microphone array having a second order directional pattern

2003-04-28

2008-12-30

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S091000, C381S122000, C381S312000, C381S313000, C381S111000, C367S119000, C367S131000, C367S121000

Reexamination Certificate

active

07471798

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.

REFERENCES:
patent: 5058170 (1991-10-01), Kanamori et al.
patent: 5224170 (1993-06-01), Waite, Jr.
patent: 5463694 (1995-10-01), Bradley et al.
patent: 5506908 (1996-04-01), Baumhauer et al.
patent: 6654468 (2003-11-01), Thompson
patent: 6741713 (2004-05-01), Boone et al.
patent: 6788796 (2004-09-01), Miles et al.
patent: 7113604 (2006-09-01), Thompson
patent: 982971 (2000-03-01), None
patent: WO-02/28140 (2002-04-01), None
Applicant's admitted prior art, Figure 18 and p. 21, lines 6-8.
International Search Report for Application No. PCT/US2004/013012 dated Oct. 1, 2004.

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