Method and apparatus for picking up sound

Details Method and apparatus for picking up sound Method and apparatus for picking up sound

2006-03-28

2006-03-28

Pendleton, Brian T. (Department: 2644)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S313000, C381S356000, C381S122000

Reexamination Certificate

active

07020290

ABSTRACT:
The invention relates to a method for picking up sound comprising the following steps providing at least two essentially omnidirectional microphones (1a,1b,1c) or membranes (9a,9b) which have a mutual distance (d) shorter than a typical wave length of the sound wave; combining these microphones (1a,1b,1c) or membranes (9a,9b) to obtain directional signals (F(t), R(t) depending on the direction (3) of sound; and processing the directional signals (F(t), R(t) to modify the directional pattern of the signals.

REFERENCES:
patent: 4399327 (1983-08-01), Yamamoto et al.
patent: 6041127 (2000-03-01), Elko
patent: 6449368 (2002-09-01), Davis et al.
patent: 6618485 (2003-09-01), Matsuo

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