Consumer Electronics

ADDITIONAL HEADS

Some VCR models incorporate additional heads. These are:

1. Stereo audio heads
2. Rotating audio heads
3. Flying erase head

(a) Stereo audio heads : Monophonic VCRs use a single audio head to record and playback sound. Older stereo VHS decks use a dual audio head for recording the right and left tracks separately. Stationary stereo audio heads are seldom found on home VCRs these days. Audio recording with two audio heads is called linear stereo. The tracks are placed alongside one another near the edge of the tape (see Fig. 33.21) and occupy the same space as the standard mono audio track (monophonic decks pick-up both the right and left channels together). Noise reduction circuitry (such as Dolby) is often used with linear stereo decks ...