Audio processing system for teleconferencing system

Telephonic communications – Special services – Conferencing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

379390, 379392, 379406, H04M 120

Patent

active

052710572

ABSTRACT:
An audio processing system (100) for use in a teleconferencing system (10) utilizes complementary comb filters (42, 52, 220, 320) in combination with an echo suppressor (210, 310) and/or a frequency scaler (60, 120) to substantially improve acoustic stability margin and reduce far-end talker echo.

REFERENCES:
patent: 3183304 (1965-05-01), Schroeder
patent: 3622714 (1971-11-01), Berkeley et al.
patent: 3973086 (1976-08-01), May, Jr.
patent: 4008376 (1977-02-01), Flanagan et al.
patent: 4029912 (1988-07-01), Geigel et al.
patent: 4253000 (1981-02-01), Kasson
patent: 4644108 (1987-02-01), Crouse et al.
patent: 4670903 (1987-06-01), Araseki et al.
patent: 4748663 (1988-05-01), Phillips et al.
patent: 4982425 (1991-01-01), Yoshida
patent: 4991166 (1991-02-01), Julstrom
patent: 4991167 (1991-02-01), Petri et al.
patent: 5029162 (1991-07-01), Epps
G. Hill, "Improving Audio Quality: Echo Control in Videoconferencing", Teleconference, Mar.-Apr. 1991, vol. 10, No. 2., pp. 29-43.
W. Armbruster, "High Quality Hands-Free Telephony Using Voice Switching Optimised With Echo Cancellation", Signal Processing IV, 1988, J. L. Lacoume et al. (eds.), Elsevier Science Publishers, B. V., pp. 495-498.
F. K. Harvey et al., "Some Aspects of Stereophony Applicable to Conference Use", Journal Audio Engineering Society, Jul. 1963, vol. 11, pp. 212-217.

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

Audio processing system for teleconferencing 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 Audio processing system for teleconferencing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio processing system for teleconferencing system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1712380

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