> Then again, you could avoid all the hassle and do a peak search yourself
> for the song you're going to record, set it just under the clipping point,
> then hit record. :-)
I think this refers to a scenario where the audio has already been recorded.
One (but not the only) example would be a "live" recording, where there is
no way to scan ahead for peaks. But, regardless of how the audio got there,
it is already recorded on the disc.
Given that, there are two possibilities:
1) Have the deck modify the audio data for an entire track. This has the
drawback that it would take a significant amount of time, as well as the
fact that the audio would have to be de/re-ATRACed. Not to mention
truncation and/or dithering problems that occur when digital audio is
manipulated. However, this method would be compatible with all
existing
playback decks.
2) Have a byte in the UTOC for each track for "playback level", giving the
increase/decrease to be applied digitally as the track was being
played.
With steps of 0.1 dB, a single byte could represent -12.8 to +12.7 dB
adjustment. This has the advantage that the audio data on the disk is
never
touched when the adjustment is made, so it can be made many times
without
any loss of quality. The drawback is that, unless I am missing
something,
the MD standard does not implement this, so it would be incompatible
with
existing equipment.
My Sony CD player has a "level file" feature similar to this that allows the
deck
to remember (in EEPROM) a level adjustment for each CD. The CD is
identified
by a unique code the record company places in the TOC.
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