iPhone;409210 Wrote: > I think that FLAC will remain the king as far as Ripping to a lossless > format for end user home use. MP3HD is regular MP3 with *-"side > information"-?* How in the world is that even loosely defined as > "mathematically lossless" when MP3 by definition is a lossy format? I > guess if youre the inventor that gives one the right to call it > whatever one likes even if it's about as far from the truth as one can > get! If it's MP3 it's lossy by default no matter what one calls it, > adds to the side of it, or what letters one puts on the end of the > acronym. > > But this is just my opinion and I will not be using this format. If one > digs into the format, one will notice that it's probably going to take a > special player. One that can read the *-"side information"-*.
This would be similar to the WavPack idea. The lossy file is accompanied by a correction file which indicates what data was dropped to make the lossy file. Taken together, both files could be used to produce a lossless version. It's a neat idea, but WavPack hasn't gained much traction. However, it has several years' head start on mp3HD, is "open and royalty-free" and features (from http://www.wavpack.com/): > *Compatible with virtually all PCM audio formats including 8, 16, 24, > and 32-bit ints; 32-bit floats; mono, stereo, and multichannel; > sampling rates from 6 to 192 kHz (and non-standard rates) > * Multiplatform support including Windows, Linux, and OS X > * Instantly seekable and streaming capable (and gapless) > * ReplayGain (including WavPack file scanner and compatible plugins) > * Uses ID3v1 and APEv2 tags for metadata (including ReplayGain) > * Error-tolerant block format conducive to hardware decoding > * Optional "asymmetrical" mode for improved compression > * MD5 audio checksums for verification and identification > * Dynamic noise shaping (dns) for optimum quality at lower hybrid > bitrates > * Small, efficient executable (no large programs or dlls to install) > * Special "low latency" version available for custom applications (among other things) All we know about mp3HD is that it's 16/44.1 only, and since it's proprietary, we may not know much more. So in short, if anyone was to do this, there should be no reason they can't use WavPack. It seems to be better than mp3HD in every way. The key will probably be hardware support. WavPack hasn't made great inroads here, but mp3HD needs a license so hardware manufacturers might hesitate. -- Mark Lanctot Current: SB2, Transporter, Boom (PQP3 - late beta), SBC (early beta) Stored: Boom (PQP1 - early beta) Sold: SB3, Duet ------------------------------------------------------------------------ Mark Lanctot's Profile: http://forums.slimdevices.com/member.php?userid=2071 View this thread: http://forums.slimdevices.com/showthread.php?t=61694
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