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Re: Minidisk data transfer and bat recordings

Subject: Re: Minidisk data transfer and bat recordings
From: "?" <>
Date: Sat, 24 Jan 2004 20:11:52 +0100 (MET)
> >>> http://www.minidisc.org/atrac_breakdown.html
> I went off and read that page. It's kind of the blind leading the blind.=


Yes, I also looked at the 'Sharp French Horn problem' that is described on
this page. It is clearly not an ATRAC effect. But is not just simple clippi=
ng.
It is a special overflow effect that can occur in digital signal processors
when the signal level exceeds the maximum value that a fixed point integer
variable can represent (the ATRAC compression algorithm is implemented on s=
uch
DSP's). The result is a spectacular change of the sign in the digital
samples. In fact, such horrific effects are the result of a design error in=
 the
specific recorder. Even if the recording level has been set too high by the=
 user,
such effects should never occur. If you see such artifacts on your recorder=
,
then you should reclaim the money that you have paid for it.

Even if not all of the arguments against ATRAC are valid, there are still
some strong arguments against the use of MD recorders for high-quality audi=
o
recording. The quantization noise added by ATRAC is not always inaudible an=
d
under some circumstances it is indeed possible that softer sounds disappear
completely (in cases where the bit-depth has been reduced down to zero bits=
 in
the corresponding frequency range). So I would still recommend not to waste
money for expensive professional MD recorders. Walt, please forgive me for
posting that opinion ;-)

Regards,
Raimund


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