Audio input system

Details Audio input system Audio input system

2003-08-27

2009-11-03

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Using signal channel and noise channel

C381S094200, C704S233000, C367S119000

Reexamination Certificate

active

07613310

ABSTRACT:
A method for reducing noise associated with an audio signal received through a microphone sensor array is provided. The method initiates with enhancing a target signal component of the audio signal through a first filter. Simultaneously, the target signal component is blocked by a second filter. Then, the output of the first filter and the output of the second filter are combined in a manner to reduce noise without distorting the target signal. Next, an acoustic set-up associated with the audio signal is periodically monitored. Then, a value of the first filter and a value of the second filter are both calibrated based upon the acoustic set-up. A system capable of isolating a target audio signal from multiple noise sources, a video game controller, and an integrated circuit configured to isolate a target audio signal are included.

REFERENCES:
patent: 4305131 (1981-12-01), Best
patent: 5335011 (1994-08-01), Addeo et al.
patent: 5353376 (1994-10-01), Oh et al.
patent: 5581620 (1996-12-01), Brandstein et al.
patent: 6173059 (2001-01-01), Huang et al.
patent: 6339758 (2002-01-01), Kanazawa et al.
patent: 7142677 (2006-11-01), Gonopolskiy et al.
patent: 7203323 (2007-04-01), Tashev
patent: 7206418 (2007-04-01), Yang et al.
patent: 2002/0009203 (2002-01-01), Erten
patent: 2003/0160862 (2003-08-01), Charlier et al.
patent: 2004/0047464 (2004-03-01), Yu et al.
patent: 2004/0057586 (2004-03-01), Licht
patent: 2004/0213419 (2004-10-01), Varma et al.
patent: 2005/0047611 (2005-03-01), Mao
patent: 0 652 686 (1995-05-01), None
patent: 1 489 586 (2004-12-01), None
Wilson and Darrell, “Audio-Video Array Source Localization for Intelligent Environments”, 2002, IEEE Dept. Of Electrical Eng and Computer Science, Massachusetts Inst. Of Technology, Cambridge, MA 02139.
Fiala et al., “A Panoramic Video and Acoustic Beamforming Sensor for Videoconferencing”, 2004 IEEE, Computational Video Group, National Research Council, Ottawa, CA KlA 0R6.
Osamu Hoshuyama and Akihiko Sugiyama, “A Robust Generalized Sidelobe Canceller with a Blocking Matrix Using Leaky Adaptive Filters”, Electronics and Communications in Japan, Part 3, vol. 80, 1997 pp. 56 - 65.
Lucas Parra and Christopher Alvino, “Geometric Source Separation: Merging Convolutive Source Separation With Geometric Beamforming”, Sarnoff Corporation.
Shoko Araki, Shoji Makino, Ryo Mukai and Hiroshi Saruwatari, “Equivalence Between Frequency Domain Blind Source Separation and Frequency Domain Adaptive Null Beamformers”, NTT Communication Science Laboratories.
Ofir Shalvi and Ehud Weinstein, “System Identification Using Nonstationary Signals,” IEEE Transactions on Signal Processing, vol. 44, No. 8, Aug. 1996.
David Burshtein and Sharon Gannot, “Speech Enhancement Using a Mixture-Maximum Model,” IEEE Transactions on Speech and Audio Processing, vol. 10, No. 6, Sep. 2002.
Barry D. Van Veen and Kevin M. Buckley, “Beamforming: A Versatile Approach to Spatial Filtering,” IEEE ASSP Magazine, Apr. 1998.
John J. Shynk, “Frequency-Domain and Multirate Adaptive Filtering,” IEEE SP Magazine, Jan. 1992.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4107853