Originally Posted by krmathis /img/forum/go_quote.gif One way to find out is to check the frequency range.
Cause MP3 files are ran through a low-pass filter on encoding, cutting off at 16-19Khz depending on settings.
You still can't be 100% sure, but it should give you a clue.
and how can i check the frequncy range? is there a software for that??
The trouble with just checking for frequency is that it will only indicate lossy files of relatively low bitrates. At higher bitrates the cutoff can be above 19 kHz or more and there often isn't a lot of energy above that even in lossless files... so lack of extremely high frequency content isn't a very sure indicator. Aucdtect (while not 100% accurate because nothing is) will do a much better job.
Originally Posted by iriverdude /img/forum/go_quote.gif If you've ripped it yourself surely you'd know if it was from the original CD?
cough cough downloading flac's?
i sometimes download(legally ofcourse) some trance tracks from juno downloads, and they supply (exept from mp3 ofcourse) wav and flac files,
so..although i am 99% sure that they are not faking it(they also charge alot for this) i decided to check the files quality anyway just to be sure.
i also have a lot of spare time lately. most of my cds i rip myself so thats not a problem.