On Mon, Mar 23, 2009 at 9:41 PM, Calum Mackay <[email protected]> wrote: > iPhone wrote: >> Steve Bernard, Jr;409324 Wrote: >>> C:\Documents and >>> Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>mp3hdencoder.exe >>> -br 320000 -if test.wav -of mp3HD.mp3 >>> > ... >>> >>> C:\Documents and >>> Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>mp3hdDecoder.exe >>> -if mp3hd.mp3 -of mp3hd.wav >>> > ... >>> >>> C:\Documents and >>> Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>fc >>> test.wav mp3HD.wav >>> Comparing files test.wav and MP3HD.WAV >>> FC: no differences encountered >> > ... > > >>>From your post, it looks like you started with an MP3HD to start with >> and end up with WAV files to me Steve. Don't follow what that proved? > > > If you look above, you can see that Steve started with a WAV file > (test.wav) and used the encoder to turn it into an mp3HD file (mp3HD.mp3). > > He then used the decoder to turn that mp3HD file into a new WAV file > (mp3HD.wav). > > He then compared the two WAV files: the original, and the > WAV->mp3HD->WAV file, and found them to be identical. > > Clearly, mp3HD can be described as lossless, at least, if not actually > useful :)
Exactly right. The wav turns into an mp3HD file and then the decoder turns it back into a new wav. These are not just the same file in file size, but the Windows file compare utility shows them to be exactly the same, bit for bit. Test.wav and mp3HD.wav are the same file just as surely as if you copied the original file using the copy command, or put the wav in a zip file and then pulled it back out. If that's not lossless enough for you, then nothing is. Turn a wav into a FLAC file, and then decompress the FLAC to another wav and compare: you'll get the same result. Seriously, iPhone, if you doubt the results, try it for yourself at http://www.all4mp3.com/Software3.aspx (no Mac version, but I presume you either have Windows or Linux on your ToughBook). For those interested, the mp3HD file I made had a lossy bit that's 320 kbps CBR (if I understood the docs correctly). The file size of the MP3 was 26,262 kB with no tags, while the same file as a FLAC (level 8) with no tags is 21,315 kB. So about 5 MB difference, which would, I guess, account for the lossy bit. Not awful, but no great shakes. The wav I used to do the testing was actually uncompressed from a FLAC that I ripped with EAC from the newest Antony and the Johnsons CD. It's 4 and a half minutes, 16 bit stereo, 44.1 kHz. -Steve _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
