On 10/1/14, Philipp Überbacher <murks@tuxfamily.org> wrote:
> Hi Egor,
Hi Philipp and all the folks that have provided input on the subject.
It is all very informative.
> once upon a time I read a lot about audio codecs on
> http://www.hydrogenaud.io/forums/. Note that this is a codec focused
> forum, not a free software focused one, but people like the lame and
> ogg developers do (or used to) read and write at those forums AFAIK. I
> also remember that there was some windows tool for the purpose you
> describe but I can't recall the name. Anyway, AFAIR it used the
> techniques already described, spectral analysis to detect lowpass
> filtering.
Great, it will be a good exercise for me, and I will try out this method.
> There are some artifacts of the mp3 codec that allow for rather
> reliable detection, pre-echos come to mind. You are likely able to
> train yourself to listen for these artifacts, but you may not be able
> to un-train yourself ;)
Haha, ok, this is usefull, too!
You guys are great!
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Received on Wed Oct 1 20:15:03 2014
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