On 23 Jul, wrote:
In article , Jim Lesurf
wrote:

[snip discussion of players distorting inter-sample peaks]

I'll see if I can find the data and I'll ask the person who gave it to
me if he minds it being made public. At the time it was just sent to
me as part of our discussions about the topic.

He has just replied and said this is OK. So I'll publish his results on
my website when I get a 'round tuit'. :-)

I've now done this and the results can be seen at

http://www.audiomisc.co.uk/HFN/OTTre...d/results.html

My thanks to Keith Howard for kindly agreeing to let me publish his
measured results. Note they were made in 2007 so only covered the players
and DACs he had to hand at that time. But - rather depressingly - all but
one of the nine he tried showed they had problems coping with the waveform
that has peaks at +3dBFS.

FWIW personally I'd love to see all reviews on DACs or player use the
'waveform from hell' I devised for the original article (a link to that is
on the above page) as a test of how they cope - or not! :-) I have the
uncomfortable feeling that whilst reviews continue to overlook this area,
problems will continue to afflict some new designs without anyone knowing.

Slainte,

Jim

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