Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Patent
1997-09-03
2000-04-18
Isen, Forester W.
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
381 1, 381 17, H04R 500
Patent
active
060524707
ABSTRACT:
A surround signal processing system receives a surround signal and also a program of processing the surround signal. The received surround signal is decoded into multiple-channel signals according to the received program. The multiple-channel signals include a left surround signal and a right surround signal. The multiple-channel signals are converted into two-channel signals according to the received program. The two-channel signals are transmitted to a pair of loudspeakers respectively. During the conversion of the multiple-channel signals into the two-channel signals, the left surround signal and the right surround signal are subjected to filtering processes according to the received program so that the left surround signal and the right surround signal will be converted into filtering-resultant signals. The two-channel signals are generated on the basis of the filtering-resultant signals. The filtering processes are designed to localize sound images at rear positions symmetrical with respect to a listener when a rear loudspeaker is absent and only front loudspeakers are used.
REFERENCES:
patent: 3746492 (1973-07-01), Scheiber
patent: 4159397 (1979-06-01), Iwahara et al.
patent: 4188504 (1980-02-01), Kasuga et al.
patent: 4349698 (1982-09-01), Iwahara
patent: 4589129 (1986-05-01), Blackmer
patent: 5043970 (1991-08-01), Holman
patent: 5052685 (1991-10-01), Lowe et al.
patent: 5095507 (1992-03-01), Lowe
patent: 5222059 (1993-06-01), Holman
patent: 5319713 (1994-06-01), Waller, Jr. et al.
patent: 5381482 (1995-01-01), Matsumoto et al.
patent: 5404406 (1995-04-01), Fuchigami et al.
patent: 5546465 (1996-08-01), Kim
patent: 5579396 (1996-11-01), Iida et al.
patent: 5727067 (1998-03-01), Iwamatsu
patent: 5844993 (1998-12-01), Iida et al.
"AC-3: Flexible Perceptual Coding for Audio Transmission and Storage", by Craig C. Todd et al; Presented at the 96th Convention 1994 Feb. 26-Mar. 1 Amsterdam; An Audio Engineering Society Preprint.
Isen Forester W.
Mei Xu
Victor Company of Japan Ltd.
LandOfFree
System for processing audio surround signal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for processing audio surround signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for processing audio surround signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2342888