Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent
1994-01-21
1995-01-31
Brinich, Stephen
Electrical audio signal processing systems and devices
Binaural and stereophonic
Hearing aid
381 1, H04R 500
Patent
active
053864735
ABSTRACT:
A passive circuit for decoding surround-sound signals using a transformer having center-tapped primary and secondary windings. The line level left and right signals are introduced into the primary winding, and the center tap of the primary supplies a left-plus-right center channel output. The secondary center tap is grounded, and the winding connections supply left-minus-right and right-minus-left surround outputs. The same circuit can be used for recording surround sound onto a two-channel (stereo) medium. A center microphone is connected to the center tap of the primary winding. Left and right surround microphones are connected to the secondary winding, which has its center tap grounded. The left and right recorder inputs are connected to the opposite sides of the primary winding.
REFERENCES:
patent: 3197561 (1965-07-01), Jones
patent: 3697692 (1972-10-01), Hafler
patent: 3725586 (1973-04-01), Iida
patent: 3745254 (1973-07-01), Ohta et al.
patent: 3761631 (1973-09-01), Ito et al.
patent: 4002835 (1977-01-01), Bumber
patent: 4132859 (1979-01-01), Ranga
patent: 4612663 (1986-09-01), Holbrook et al.
"Single Push-Pull Stage for Both Stereo Channels" Norman H. Crowhurst; pp. 48, 49 & 146-148; Jan. 1954.
"The `Stereo-Plus` System"; Shottenfeld & Staudt; pp. 23 & 114-117; Oct. 1959.
Brinich Stephen
Grant II Jerome
LandOfFree
Passive surround sound circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive surround sound circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive surround sound circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1107345