Thomas Uwe Gruettmueller <[EMAIL PROTECTED]>: > > You have a similar but less severe problem if A is a > > high-precision digital recording (with lots of random noise in > > the low bits) and D is a compressed version: clearly A is > > source of D, > > I would argue that D is an excerpt of A.
If someone were to improve the compression algorithm then you would want to go back and recompute D, particularly if D has an audible artefact, so I would say that A is source. Of course, if we're talking about lossless compression (possibly preceded by throwing away the low bits) then I might agree it's an excerpt, but I was thinking about something like Ogg Vorbis. Edmund
