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Path: utzoo!watmath!clyde!burl!ulysses!allegra!alice!jj
From: jj@alice.UUCP
Newsgroups: net.audio
Subject: Small level differences- CD comparisons
Message-ID: <3831@alice.UUCP>
Date: Fri, 7-Jun-85 12:00:21 EDT
Article-I.D.: alice.3831
Posted: Fri Jun  7 12:00:21 1985
Date-Received: Sat, 8-Jun-85 02:55:23 EDT
Organization: New Jersey State Farm for the Terminally Bewildered
Lines: 26

>one from the other during the test (but not which was which since the
>person working the a/b switch didn't show the listener).  ***We attempted
>to match up the NEC and the MERIDIAN by ear, admittedly the slight
>level difference would cause problems but, in any case, anyone who would
>evaluate these would admit that that was not a problem in this case.***
>The tests were done by syncing identical CD's in both players and having
>a third person work the a/b switch.
>-Ron

See the part surrounded by ***'s.

No, Ron, I don't buy it.  Assuming that you were listening
at levels of roughly 80-90 dB,  a change of level on the order of
.25-.5dB will lead to a perceived change in  low bass and high frequency
levels on the order of 2-5dB, depending on the level and the listener.

Very small level differences at levels close to the thresholds for
extreme frequencies cause huge differences in the perceived level.  
It's a well established FACT!  See any of the 1940's and so
papers on hearing.  (Fletcher and Munson comes to mind, not too
surprisingly.)
-- 
TEDDY BEARS HAVE LIMITED PATIENCE! THEY DO EVENTUALLY GET HUNGRY!
"Let us remember my cat, Geoffrey, ..."

(ihnp4/allegra)!alice!jj