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CD Pre-Emphasis
Bromo wrote in message ...
On 12/7/03 12:23 PM, in article , "Paul Graber" wrote: In fact, only a tiny proportion of early CDs actually incorporated the pre-emphasis, perhaps none in the last fifteen years. It's pretty much a non-issue. A lot of folks realized that a colorless recording is a lot better - because pre-emphasis for analog tapes required de-emphasis circuitry on the other end to sound right - hence all the Dolby "noise reduction" stuff on casette tapes! Hmm... I must add here that pre/de-emphasis on tape is NOT the same as the Dolby noise reduction. Dolby (B & C, I think) included COMPRESSION/DECOMPRESSION of high frequencies, which is very different from pre/de-emphasis. But of course you all knew that. :-) |
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