Wind noise suppression in directional microphones

Details Wind noise suppression in directional microphones Wind noise suppression in directional microphones

2007-08-21

2007-08-21

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S359000

Reexamination Certificate

active

10042860

ABSTRACT:
A directional microphone includes a housing, a diaphragm dividing the housing into a front volume and a back volume, electronics for detecting signals corresponding to movements of the diaphragm, and front and back inlets for the front and back volumes, respectively. To obtain additional low frequency roll-off in the directional microphone, the directional microphone includes an elongated acoustical conduit connecting the front volume and the back volume. The acoustical conduit may be external or internal to the housing.

REFERENCES:
patent: 3836732 (1974-09-01), Johanson et al.
patent: 5878147 (1999-03-01), Killion et al.
patent: 6075869 (2000-06-01), Killion et al.
patent: 6134334 (2000-10-01), Killion et al.
patent: 6151399 (2000-11-01), Killion et al.
patent: 6285771 (2001-09-01), Killion et al.
patent: 00/38477 (2000-06-01), None
Acoustical Society of America 136thMeeting Lay Language Papers; Electronic Removal of Outdoor Microphone Wind Noise; Oct. 12-13, 1998 (5 pages).

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