Quote:
Originally Posted by monolith
Should be easy enough if you look at the spectrals. mp3s usually have hard cut offs in the extreme high end that lossless files don't have.
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We have a winner ! even a really good MP3 will drop off rapidly after 19K or 20K, in theory with LAME 3.92 you can set the low pass to 22.05 but whenever I have tried this it will still truncate high frequencies abnormally while a wav file will slope off more gradually.
In later versions of LAME the ability to set really high low pass filters has been more or less disabled.