Paul Winkler wrote:
> I've noticed that a number of CDs contain an apparently spurious
> first track that's apparently very short (about a tenth of a
> second) and contains no audible signal. What the heck is the
> point of this track?
None.
Most positions on an audio CD are specified as sector numbers. The
Red Book says that the start of the first track is at sector 0; the
table of contents is placed in the lead-in area in sectors -32 to -1.
Some CDs (and/or some CD drives) get something wrong so that the first
track is reported to start at sector 32.
One sector is 1/75th of a second (588 frames), so usually nobody
notices this.
> File : track00.cdda.wav
Data before the first track is grabbed as "track 0" which doesn't
ordinarily exist on audio CDs.
> Frames : 5880
This is 10 sectors, not 32, so the explanation above doesn't apply.
;-)
HTH
Clemens
Received on Mon Aug 1 16:15:06 2005
This archive was generated by hypermail 2.1.8 : Mon Aug 01 2005 - 16:15:07 EEST