H - Electricity – 04 – S
Patent
H - Electricity
04
S
179/9
H04S 3/00 (2006.01) H04H 5/00 (2006.01)
Patent
CA 1202571
ABSTRACT A triphonic sound system in which three in- dependent stereophonically related audio frequency source signals L, R and C are combined to derive three other audio frequency signals M, S, and T which re- spectively comprise (L + 1.4C + R), (L-R) and (-1.4C). In a preferred transmitter embodiment, useful in television broadcasting, the audio signals S and T modulate two quadrature-related sub-carriers of the same frequency to develop two double-sideband, suppressed-carrier sig- nals, the frequency of the subcarriers being suffi- ciently high as to assure a frequency gap between the lower sidebands of the modulated subcarrier signals and the audio frequency signal (L + 1.4C + R). The afore- mentioned signals, and a pilot signal having a frequency which lies within the frequency gap, are combined and frequency-modulated onto a high frequency carrier for the purpose of transmitting the same to one or more remote receivers. The receiver is operative in response to reception of the high frequency carrier to reproduce each of the audio frequency source signals L, R and C, and includes means for reproducing conventional monophonic and two-channel stereophonic broadcasts. The described matrix equations are amenable to and useful with multi- channel television sound systems currently under con- siderarion for future broadcast service in the United States.
441129
Cbs Inc.
Gowling Lafleur Henderson Llp
LandOfFree
Triphonic sound 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 Triphonic sound system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Triphonic sound system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1316757