[net.audio] re dbx vs Dolby C

nz@wucs.UUCP (Neal Ziring) (03/02/86)

	I did some tests just the other day with my Technics tape deck
and BSR equalizer (yes, from DAK, no straight-wire-with-gain flames, please)
to determine which noise reduction works better for me.
I often use the Equalizer to ``improve'' the frequency response of the
tape deck, and I wanted to see how Dolby C and dbx reacted to that, too.
My results were not conclusive, but...

	1. In recording silence, dbx was quieter.

	2. In recording music with quick dynamics changes, the dbx
	   ``breathed'' terribly, worse with the equalization than
	   without it.  Dolby C did not breathe at all, as far as I
	   could tell.

	3. Dolby C seemed to work well with or without equalization.

	4. In taping music with great dynamic range, the dbx gives you
	   a bit of an edge.  I have never saturated a tape when using dbx.

	5. Dolby C is slightly quieter in the very soft passages, I think.
	   It also seems to have a slightly ``different'' sort of hiss.
	   One that I find a little less annoying than the dbx-flavor hiss.

Hope these results are helpful to somebody.  I make most of my tapes with
dolby B anyway, because my car and office equipment have no noise reduction
at all.  Listening to dolby-C or dbx tapes without the appropriate decoding
is irritating.
-- 
...nz@wucs (ECL - we're here to provide superior computing)

	{seismo,ihnp4,cbosgd}!wucs!nz   OR   nz@wucs.UUCP

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