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From: hunter@work.nlm.nih.gov (Larry Hunter)
Newsgroups: rec.audio.high-end
Subject: Re: low distortion sine wave test disc?
Message-ID: <8302@uwm.edu>
Date: 13 Dec 90 13:58:03 GMT
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Approved: tjk@csd4.csd.uwm.edu
Originator: tjk@csd4.csd.uwm.edu



   I'm looking for a CD with some very low distortion sine waves,
   preferably something along the lines of .01%, and preferably at a number
   of different frequencies.  I've borrowed a distortion analyzer and I'm
   having trouble finding a clean enough source to really test out my
   system.  Any recomendations?

I don't own a sensitive distortion analyzer (and I've never checked
with a 'scope - hmm) but I've gotten a lot of use out the Denon test
disk.  I can look up the disk id at home, but I think they only made
one.  It has sine wave tones ranging from 20 to 20k hz in relatively
small steps (recorded at various levels), sweeps, low level linearity
tests, noise tests, and all sorts of useful things.  A very helpful
CD.

	Larry
--
Lawrence Hunter, PhD.
National Library of Medicine
Bldg. 38A, MS-54
Bethesda. MD 20894
(301) 496-9300
(301) 496-0673 (fax)
hunter@nlm.nih.gov (internet)
hunter%nlm.nih.gov@nihcu (bitnet/earn)