The first IF amplifier (17) includes a first adjacent-channel sound carrier trap, in consequence whereof the first-IF-amplifier response is substantially reduced for the downconverted picture carrier, and an in-channel sound carrier trap.
Front end portions of television receivers or video tape recorders are described each of which uses separate intermediate-frequency (IF) amplifiers for the FM sound carrier and vestigial AM picture carrier.
A NICAM sound carrier is transmitted which is modulated with digital sound signals.
A second IF amplifier (21) includes a second adjacent-channel sound carrier trap.
Application in particular for VHS video recorders for use with a television signal having a NICAM sound carrier.
The tone carrier of the channel selected now serves as an auxiliary frequency.
An FM modulator (6) is provided in the second audio channel (4) and is used for modulating the signal in the second audio channel (4) (the sum of the stereo low-frequency signal (R) and the pilot signal) onto an audio carrier (intermediate carrier).
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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