Dolby Noise Reduction
The Dolby noise-reduction system works by increasing the volume of low-level high-frequency sounds during recording and correspondingly reducing them during playback. This reduction in high-frequency volume reduces the audible level of tape hiss.
Read more about this topic: Ray Dolby
Famous quotes containing the words noise and/or reduction:
“Let there be no noise made, my gentle friends,
Unless some dull and favorable hand
Will whisper music to my weary spirit.”
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—Jimmy Carter (James Earl Carter, Jr.)