Steve Bernard, Jr;409324 Wrote: > On Mon, Mar 23, 2009 at 5:34 PM, iPhone wrote: > > > Seems I didn't make my point. It is very simple. Why bother with MP3 > > files with "side information" files attached to mathematically get > to > > lossless when one can just use lossless files? I would bet the farm > > that one can't take an MP3HD file and remake the orginal file from > the > > MP3HD file! Which is what my difinition of lossless is. > > Well, that hypothesis certainly seems testable: > > -- > > C:\Documents and > Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>mp3hdencoder.exe > -br 320000 -if test.wav -of mp3HD.mp3 > [evaluation copyright notice snipped] > > frame 10091 > > Encoding successful (frame 10091) > > > Playing time: 263.5 seconds > Encoding time: 22.4 seconds > > C:\Documents and > Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>mp3hdDecoder.exe > -if mp3hd.mp3 -of mp3hd.wav > [evaluation copyright notice snipped] > > Decoding of file: mp3hd.mp3 > Average bit rate: 816 kbit/s > > Decode frame 10091 in CD-Quality > > Decoded mp3hd.mp3 > > > > Playing time: 263.5 seconds > Decoding time: 16.1 seconds > > C:\Documents and > Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16>dir *.wav > Volume in drive C has no label. > Volume Serial Number is D8DB-EE1B > > Directory of C:\Documents and > Settings\Steve\Desktop\mp3HD_Toolkit_for_Windows_2009-03-16 > > 03/23/2009 06:32 PM 46,489,676 mp3hd.wav > 01/20/2009 09:19 PM 46,489,676 test.wav > 2 File(s) 92,979,352 bytes > 0 Dir(s) 23,435,821,056 bytes free > > 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 > > -- > > Looks the same to me. > > -Steve
Let me start by saying I dont know enough about MP3HD to state facts just mainly ask a bunch of questions that I think need to be answered. What I do know is that FLAC is lossless and can be turned back into an exact copy of the original and that it plays as a lossless copy of the original. All MP3 codecs to date have thrown music away as part of reducing the file size. If one were not still doing that, why would one associate their product with MP3? Basically MP3Pro was MP3 with a wider allowable bandwidth using a slightly less aggressive file reducing codec. And if they are not dumping any notes, then are they limiting bandwidth to reduce file size? And that is why they are using the term "Mathematically lossless because most people cant hear so high or so low? >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? There is no proof the MP3HD is an exact copy of the CD it was ripped from to start with or that it could be converted back to what was on the CD to start with. To me just them using the term "Mathematically" lossless means that something is a miss or they would just come out and say it's lossless. And by "Mathematically" they might mean pretty much what you tried to show: look the file sizes are the same so they have to be the same, which doesn't necessarily have to be true. Probably so, but doesnt have to be. Again dont know enough about it, but how they are putting it out to the world seems fishy from where I stand. What I want is to see and hear a file being ripped from CD, encoded to MP3HD, then converted back to CD Audio, compared, and written back to CD. Then rip that file from the CD just made and compare it to the FLAC of the file ripped from the original CD. If those two FLAC files match, then we can consider MP3HD a lossless storage format. Now from their if that is successful, we have the bigger question of whether the MP3HD files [i]Really[i] playback lossless since there is something going on with the process of playing the side information. So is it a lossless storage format that almost plays back lossless, but not quite? Again, dont know the answer to that question yet either. But again the way they present it, makes one wonder. -- iPhone *iPhone* Media Room: Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, Vandersteen Quatro, VeraStarr 6.4SE 6-channel Amp, VCC-5 Reference Center, four VSM-1 Signatures, Runco RS 900 CineWide AutoScope 2.35:1 Living Room: Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A Signature, Two 2Wq subs, VCC-2, Two VSM-1 Kitchen: Squeezebox BOOM Bedroom: SB3, GFR-700HD, Thiel 2.3, Second Boom Home Office: SB3, NAD C370, two VSM-1 Home Gym: SB3, Parasound Vamp v.3, Thiel PowerPoint 1.2 House Portable: SB3, Audioengine A5 Thunderbird: Duet, Mac Mini Expedition: SB3, ToughBook ------------------------------------------------------------------------ iPhone's Profile: http://forums.slimdevices.com/member.php?userid=13622 View this thread: http://forums.slimdevices.com/showthread.php?t=61694
_______________________________________________ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
