Don Capps wrote,
| ...I have noted with some interest that several list members apparently
| record mp3 files from their computers onto minidisc. ...
| In light of this, how do you all feel about the fact
| that mp3 files recorded to minidisc have been subjected to rather heavy data
| compression, not once, but twice? This, it would seem to me, would have a
| definite effect on fidelity. ... Any thoughts on this?
I see it this way:
The lossiness of ATRAC is not orthogonal to the lossiness of MP3 encoding.
If a song was on a CD but you have it as a 10:1 .mp3 file, and you play the
.mp3 file as input to MD, the resulting MD track is 1/5, not 1/50, the size
of the original CD track. There is a lot of extrapolation in decoding the
.mp3 file into S/PDIF or into analog output, and, because of overlap in the
algorithms, a disproportionate part of what ATRAC discards comes from the
extrapolation rather than from the retained data.
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