[vorbis-dev] audio analysis tool?
segher at koffie.nl
Tue Nov 5 17:13:39 PST 2002
Eric Seppanen wrote:
> I'm curious, does anyone know of a way to analyze a wave file to determine
> the quantity of information in it? For example, given a particular .wav
> file, how can I find out if it's an original or was encoded to something
> lossy and back?
Just look at a spectrogram. Big empty regions at the high frequencies
==> lossy. Lots of other features, too (it's not very hard to see which
codec you're looking at).
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