Recent Finds & Thoughts

From: Chuck McManis <>
Date: Tue Dec 1 17:58:43 1998

At 03:19 PM 12/1/98 -0800, Cameron wrote:
>The question is, does source => Dolby encoding => Dolby decoding == source?
>Dolby encoding, AFAIK, increases the volume of sounds >10KHz, and decoding
>does the reverse.

Dolby compresses the sound track in the high end causing high frequencies
to get a lot higher. Generally static is thus moved out of the reproducible
range of the tape and when the signal is decompressed the "hiss" is gone.
And yes, it alters the frequency spectrum of the signal source in an effort
to remove "noise".

Received on Tue Dec 01 1998 - 17:58:43 GMT

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