Separation of L+R from L-R in BTSC system

Details Separation of L+R from L-R in BTSC system Separation of L+R from L-R in BTSC system

1986-07-07

1988-07-12

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

H04H 500

Patent

active

047575387

ABSTRACT:
A stereo signal separation system for separating the L+R and L-R components of a BTSC stereo signal mixes the BTSC signal with a multiple of the pilot frequency. To recover the L+R component the mixer output is combined with the input BTSC signal, and to recover to L-R component the mixer output is combined with a second mixer output shifted ninety degrees. The combined output is low pass filtered to recover the desired component.

REFERENCES:
patent: 4282401 (1981-08-01), Takahashi
patent: 4497063 (1985-01-01), Ishida et al.
patent: 4539697 (1985-09-01), Ishida et al.

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