Bit-perfect AAC/MP3/etc decoding?, Is it an issue? |
Bit-perfect AAC/MP3/etc decoding?, Is it an issue? |
 Jan 5 2013, 00:43
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Group: Members Posts: 8 Joined: 30-May 05 Member No.: 22401  |
Sorry if this is easily answered elsewhere.
My question is that in a comparison of lossy-format decoders between, let's say, iTunes and Foobar and Winamp, will the output (edit: of a single source file) vary between decoding implementations? Or is it that once a decoder follows a specified format, all output is equal assuming there are no bugs? This post has been edited by mavere: Jan 5 2013, 00:51 |
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Jan 5 2013, 01:14
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Group: Super Moderator Posts: 4336 Joined: 23-June 06 Member No.: 32180 |
QUOTE Unlike encoding, I believe all decoders are supposed to be the same. Within some aurally insignificant reference range. Beyond that, I don’t think differences are uncommon, albeit slight.Decodes can differ due to differences in rounding between CPUs, programming implementations, dither, etc. Will the outputs be equal? Perhaps not. Does it matter? Not unless something is broken. |
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mavere Bit-perfect AAC/MP3/etc decoding? Jan 5 2013, 00:43
DVDdoug Unlike encoding, I believe all decoders are suppos... Jan 5 2013, 01:00
Arnold B. Krueger QUOTE (DVDdoug @ Jan 4 2013, 19:00) Unlik... Jan 7 2013, 15:45 saratoga QUOTE (Arnold B. Krueger @ Jan 7 2013, 09... Jan 7 2013, 16:49 saratoga QUOTE (mavere @ Jan 4 2013, 18:43) My que... Jan 5 2013, 01:17 mjb2006 In AAC there can be Perceptual Noise Substitution,... Jan 5 2013, 03:53 benski QUOTE (mjb2006 @ Jan 4 2013, 22:53) In AA... Jan 5 2013, 10:08 IgorC Related topics
Updated compliance testing for Win... Jan 5 2013, 20:31 db1989 …in which the author claims that differences... Jan 5 2013, 21:48 Soap QUOTE (db1989 @ Jan 5 2013, 15:48) ... Jan 5 2013, 22:11 db1989 Sorry, I did read it wrongly.
QUOTE RMS level [of... Jan 5 2013, 22:56 Soap QUOTE (db1989 @ Jan 5 2013, 16:56) I apol... Jan 5 2013, 23:26 db1989 Heh, I’m glad it’s not just me.
Alth... Jan 6 2013, 00:14 |
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Lo-Fi Version | Time is now: 20th May 2013 - 17:06 |
