Matrix decoding method and apparatus

Electrical audio signal processing systems and devices – Binaural and stereophonic – Quadrasonic

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

381 20, H04R 500

Patent

active

057270686

ABSTRACT:
A matrix decoding system and method generates left, right, center and surround output signals by adding and subtracting weighted versions of first and second input signals. The output signals are generated using a variable matrix to combine the input signals. The variable matrix is controlled by steering control signals derived from a controller which generates the steering control signals responsive to the detected phase difference between the first and second input signals. The decoding system and method uses compressors to generate constant amplitude versions of the input channels prior to performing phase detection. Because the compressors generate constant amplitude signals, phase detection is not affected by an imbalance in channel power.

REFERENCES:
patent: 3632886 (1972-01-01), Scheiber
patent: 3746792 (1973-07-01), Scheiber
patent: 3825684 (1974-07-01), Ito et al.
patent: 3944735 (1976-03-01), Willcocks
patent: 3959590 (1976-05-01), Scheiber
patent: 4799260 (1989-01-01), Mandell et al.
patent: 4941177 (1990-07-01), Mandell et al.
patent: 5046098 (1991-09-01), Mandell et al.

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

Matrix decoding method and 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 Matrix decoding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matrix decoding method and apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-146614

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