EXS 24 Logic Sampler Users Group

> Bernard...your Roland deemphasis in Cd-Xtractr doesn't work
> correctly...that's why there's no audible difference in the files. The
Roland
> emphasis curve is HUGE (about 20db at 18k) so it is VERY audible and
easily
> measurable. This is why we have used Translator for this conversion in the
> past, Garth has a lot of different versions of the Roland de-emph curve
that
> have been tweaked by ear as well as by scope. You can't do it properly by
> numbers alone. The info that Roland has for documentation of the curve is
> incomplete to do it this way.

Thank you Eric for this precious information, but you misunderstood me. I
didn't say that I can't hear the difference with the deemphasis filter
included
in CDxtract, as a matter of fact I do hear it. I just wanted to compare it
with the different deemphasis filters of Translator. That's why I tried to
convert several Roland discs to various formats and with the "Authentic
deemphasis" activated. And because I didn't hear the difference this time
I had this simple idea to make a binary comparaison with the original
samples and found that even when I clearly see "de-emphasizing" sample
in the conversion process, the samples are not filtered at all.
Try yourself. If you have the same problem then it's probably a very simple
bug that will take less than 5 minutes to fix. I'm sure that there really
is a deemphasis filter in Translator, my problem is that I cannot get it to
work.
What I want to do is simply convert the same Roland sample with the
2 softwares and make a binary comparaison of the 2 converted .wav
files.

Bernard

PS : Actually I didn't use any Roland
documentation to make my deemphasis filter, I have just analyzed and copied
the deemphasis filter that is included in my S760, this is for me much more
accurate than tweaking an EQ (moreover I don't have your ears :-)