16 Dec
2003
16 Dec
'03
1:46 a.m.
On Mon, 15 Dec 2003 22:37:20 +0200
Juhana Sadeharju <kouhia(a)nic.funet.fi> wrote:
Also an audiofile comparer program would be great to
have: a program
which finds matching regions. Now it was easy to compare the regions
up to the "!" point with md5sum program, but it was difficult to compare
the end part due misaligning. I compared them visually at a few random
points. In such a comparer program each matching sample would match
bitwise for this application, but they could match with an error tolerance
if the application is to compare an original audio and an edited audio
which is affected by dither noise (say). So, such a comparer would
reveal what edits were done in an audio editor -- I have needed such
a program a few times earlier.
I started a program like that based on libsndfile. Its definitely not as
easy as you might at first think, especially when dealing with say
45 minutes worth of 96kHz/24bit/Stereo data :-).
Maybe I should clean that code up a bit and post it.
Erik
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Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid)
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