Corboy-Poteet wrote:
David. let me pose a question: if you converted the digitized voice
signal to mp3 or ogg format, is this similar to (or the same as) a
I don't know the fine details of ogg, but mp3 is certainly frequency
domain, and I think ogg will be the same.
mp3 is fairly complicated, and designed for music, which is more
demanding that speech. It basically works by noting that the ear cannot
detect weak sounds close in frequency to strong ones (the K2 is a bad
ear!) and therefore doesn't bother encoding those weak frequencies, but
in the end, everything is coded as the spectrum not the time domain
signal. (This is very simplified, because I cannot remember the fine
details).
freq domain data stream? The data compression from CD wav file to mp3
is around 10 to 1; you are certainly not storing a digital copy of the
Actually, that's the compression used to try and match CD quality. For
speech, you can get away with about 16kbs (good enough for mono language
practice; if I remember correctly, the codec will go down to 8kbps).
--
David Woolley
Emails are not formal business letters, whatever businesses may want.
RFC1855 says there should be an address here, but, in a world of spam,
that is no longer good advice, as archive address hiding may not work.
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