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echo: audio
to: Jason Vierik
from: August Abolins
date: 2003-06-19 19:40:00
subject: 128kbps is not cd quality

Hi Jason (of 1:229/658),
On Thu, 19 Jun 03 at 11:51 o'clock, you wrote me:

 JV> You can encode an MP3 back to a WAV and it will be of the same
 JV> quality.

Yes, you can encode the MP3 file back to WAV, but it won't be the same
quality as the original WAV.  

You're not understanding how MP3 works in the first place.  MP3 compression
REMOVES data on its way to achieve the smaller file size.  If you then take
that (smaller) MP3 file and "Save As.." to save it back to WAV
format, where are the missing bits going to come from?!!!  The conversion
will establish WAV format as you expect, and you can play it at the
1411kbps "rate", but the resulting file will be filled with
"000000" 's in the locations where there was data in the
"original" WAV sound file from the CD.    All you have to do is
compare an original full size 40meg WAV file ripped from a CD, with one of
your MP3-to-WAV "restorations" - that is, LOOK INSIDE THE FILE
(with a data editor) -  and you will see that the MP3-to-WAV file will have
"0000's", or holes in it!  (missing data!).


...August

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