Handsfree communication system

Electrical audio signal processing systems and devices – Directive circuits for microphones

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C381S091000, C381S122000, C367S118000, C367S119000

Reexamination Certificate

active

08009841

ABSTRACT:
A handsfree communication system includes microphones, a beamformer, and filters. The microphones are spaced apart and are capable of receiving acoustic signals. The beamformer compensates for propagation delays between the direct and reflected acoustic signals. The filters are configured to a predetermined susceptibility level. The filter process the output of the beamformer to enhance the quality of the received signals.

REFERENCES:
patent: 4696043 (1987-09-01), Iwahara et al.
patent: 5659619 (1997-08-01), Abel
patent: 5715319 (1998-02-01), Chu
patent: 5727074 (1998-03-01), Hildebrand
patent: 6339758 (2002-01-01), Kanazawa et al.
patent: 6507659 (2003-01-01), Iredale et al.
patent: 6549627 (2003-04-01), Rasmusson et al.
patent: 6594367 (2003-07-01), Marash et al.
patent: 6748088 (2004-06-01), Schaaf
patent: 6836243 (2004-12-01), Kajala et al.
patent: 7076072 (2006-07-01), Feng et al.
patent: 7158643 (2007-01-01), Lavoie et al.
patent: 2003/0063759 (2003-04-01), Brennan et al.
patent: 2003/0072464 (2003-04-01), Kates
patent: 2004/0120532 (2004-06-01), Dedieu et al.
patent: 2005/0232441 (2005-10-01), Beaucoup et al.
patent: 2006/0233392 (2006-10-01), Koyanagi
patent: WO 01/87011 (2001-11-01), None
Su, et al. “Performance Analysis of MVDR Algorithm in the Presence of Amplitude and Phase Errors”, pp. 796-800, IEEE 2001.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Handsfree communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Handsfree communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handsfree communication system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2755709

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.