Receiver for compatible FM stereophonic system utilizing compand

Details Receiver for compatible FM stereophonic system utilizing compand Receiver for compatible FM stereophonic system utilizing compand

1987-07-09

1988-09-06

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381106, 333 14, H04H 500

Patent

active

047698411

ABSTRACT:
In the receiver of an FM stereo broadcasting system which transmits both the usual stereo difference signal S and a compressed version S' of the difference signal compressed according to a compression characteristic such that signals in a lower portion of the audio frequency spectrum are not compressed and signals having frequencies above said portion are compressed, according to a desired characteristic, instead of complementarily expanding the compressed difference signal, only those signal frequencies that have been compressed at the transmitter are expanded.

REFERENCES:
patent: 4388493 (1983-06-01), Maisel
patent: 4485483 (1984-11-01), Torick et al.
patent: 4534054 (1985-08-01), Maisel
patent: 4602380 (1986-07-01), Stebbings
patent: 4602381 (1986-07-01), Cugnini et al.
patent: 4704727 (1987-11-01), Beard

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