Acoustic correction apparatus

Electrical audio signal processing systems and devices – Binaural and stereophonic

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

381 86, 381 98, H04R 500

Patent

active

058504532

ABSTRACT:
An acoustic correction apparatus processes a pair of left and right input signals to compensate for spatial distortion as a function of frequency when said input signals are reproduced through speakers in a sound system. The sound-energy of the left and right input signals is separated and corrected in a first low-frequency range and a second high-frequency range. The resultant signals are recombined to create image-corrected audio signals having a desired sound-pressure response when reproduced by the speakers in the sound system. The desired sound-pressure response creates an apparent sound image location with respect to a listener. The image-corrected signals may then be spatially-enhanced to broaden the apparent sound image.

REFERENCES:
patent: 3229038 (1966-01-01), Richter
patent: 3665105 (1972-05-01), Chowning
patent: 3697692 (1972-10-01), Hafler
patent: 3745254 (1973-07-01), Ohta et al.
patent: 3757047 (1973-09-01), Ito et al.
patent: 3761631 (1973-09-01), Ito et al.
patent: 3772479 (1973-11-01), Hilbert
patent: 3849600 (1974-11-01), Ohshima
patent: 3885101 (1975-05-01), Ito et al.
patent: 3925615 (1975-12-01), Nakano
patent: 4024344 (1977-05-01), Dolby et al.
patent: 4204092 (1980-05-01), Bruney
patent: 4209665 (1980-06-01), Iwihara
patent: 4218583 (1980-08-01), Poulo
patent: 4219696 (1980-08-01), Kogure
patent: 4237343 (1980-12-01), Kurtin et al.
patent: 4308423 (1981-12-01), Cohen
patent: 4308424 (1981-12-01), Bice, Jr.
patent: 4309570 (1982-01-01), Carver
patent: 4329544 (1982-05-01), Yamada
patent: 4332979 (1982-06-01), Fischer
patent: 4355203 (1982-10-01), Cohen
patent: 4356349 (1982-10-01), Robinson
patent: 4393270 (1983-07-01), Vandenberg
patent: 4394536 (1983-07-01), Shima et al.
patent: 4408095 (1983-10-01), Ariga
patent: 4479235 (1984-10-01), Griffis
patent: 4489432 (1984-12-01), Polk
patent: 4495637 (1985-01-01), Bruney
patent: 4497064 (1985-01-01), Polk
patent: 4503554 (1985-03-01), Davis
patent: 4567607 (1986-01-01), Bruney
patent: 4569074 (1986-02-01), Polk
patent: 4589129 (1986-05-01), Blackmer
patent: 4594610 (1986-06-01), Patel
patent: 4594729 (1986-06-01), Weingartner
patent: 4594730 (1986-06-01), Rosen
patent: 4622691 (1986-11-01), Tokumo et al.
patent: 4648117 (1987-03-01), Kunugi et al.
patent: 4696036 (1987-09-01), Julstrom
patent: 4703502 (1987-10-01), Kasai
patent: 4748669 (1988-05-01), Klayman
patent: 4856064 (1989-08-01), Iwamatsu
patent: 4866774 (1989-09-01), Klayman
patent: 4866776 (1989-09-01), Kasai et al.
patent: 4888809 (1989-12-01), Knibbeler
patent: 4953213 (1990-08-01), Tasaki
patent: 5033092 (1991-07-01), Sadaie
patent: 5046097 (1991-09-01), Lowe
patent: 5105462 (1992-04-01), Lowe
patent: 5146507 (1992-09-01), Satoh et al.
patent: 5180990 (1993-01-01), Ohkuma
patent: 5208860 (1993-05-01), Lowe et al.
patent: 5228085 (1993-07-01), Aylward
patent: 5251260 (1993-10-01), Gates
patent: 5255326 (1993-10-01), Stevenson
patent: 5325435 (1994-06-01), Date et al.
patent: 5371799 (1994-12-01), Lowe et al.
patent: 5386082 (1995-01-01), Higashi
patent: 5420929 (1995-05-01), Geddes et al.
patent: 5533129 (1996-07-01), Gefvert
patent: 5661808 (1997-08-01), Klayman
Multi-channel Matrix Systems: An Overview by John M. Eargle Sound & Hearing by S.S. Stevens.
How We Hear Direction by Denis Vaughan Japanese Kokai Publication #59-27692 w/ partial translation.
Japanese Kokai Publication #61-33600 w/ partial translation The Loudspeaker/Living Room System by Roy F. Allison.
Acoustics of the Singing Voice by Johan Sundberg.
An Artificial Stereophonic Effect by Manfred Schroeder.
A New Sound Image Broadening Control System by Kohichi Kurozumi.
A New Analog Signal Processor for a Stereo Enhancement System by Masaki Ishihara.
Kaufman, "Frequency Contouring For Image Enhancement," Audio, Feb. 1985, pp. 34-39.

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

Acoustic correction apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1463389

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