Optimus SCP-87 Cassette Player User Manual


 
32
DOLBY NOISE REDUCTION
Your cassette player uses the Dolby B Noise-Reduc-
tion system to reduce background noise or tape hiss
on your tapes. When a Dolby-encoded tape is re-
corded, the Dolby circuit listens to the program mate-
rial to find soft passages where you might later be
able to hear the tape noise. The Dolby NR system in-
creases the recording level during these passages.
When you play the tape, the circuit reduces the vol-
ume of these passages to their original levels and re-
duces the level of tape hiss to as little as one-third of
the usual noise level.
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