Archive of the former Yahoo!Groups mailing list: MOTM

OK class is in session! All you stooges in the back, sit down!

MP3 is a "perceptual coder". It DOES NOT encode/compress static waveforms,
like a VCO output.
Just like JPEG goes a crap job on pure black & white images.

MP3 is actually a brilliant scheme which has to do with how ∗humans perceive
music∗, and has
nothing ∗whatsoever∗ to do with "waveform compression".

All audio compression schemes are based on human hearing. The ADPCM
algorithm used in cell phones
is specific for band-limited voice. You run music through ADPCM, you feel
the hurt. But voice is perfectly
replicated.

So, don't get your panties in a wad over scope shots!

Paul S.