Mp3 decoding, in theory, always the same? |
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Mp3 decoding, in theory, always the same? |
 Apr 15 2007, 23:58
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#1
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Group: Members Posts: 318 Joined: 26-November 04 Member No.: 18345  |
Obviously there are differences in mp3 encoders - the algorithms and settings used to produce a file. But for a given mp3 file, should it decode to exactly one WAV file, or can there also be differences in the decoding?
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Apr 16 2007, 01:12
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#2
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Group: Members Posts: 2032 Joined: 31-August 05 Member No.: 24222 |
Some decoders are not written properly and some don't implement the entire standard, thus not all will not give the same results with all mp3 files. There has particularly been a lack in many portable mp3 players. Many are restricted to a limited range of bitrates and sometimes will only handle CBR files.
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Apr 16 2007, 01:38
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#3
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 ReplayGain developer Group: Developer Posts: 4584 Joined: 5-November 01 From: Yorkshire, UK Member No.: 409 |
Even in "compliant" decoders, there is different rounding at the least significant bit level, and sometimes dither.
http://mp3decoders.mp3-tech.org/ Cheers, David. |
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Apr 16 2007, 09:48
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#4
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 Group: Developer Posts: 1317 Joined: 20-March 04 From: Göttingen (DE) Member No.: 12875 |
Also, some decoders might sacrifice accuracy for a gain of speed by using less precision during the synthesis filterbank.
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Apr 16 2007, 12:46
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#5
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Group: Members Posts: 224 Joined: 8-July 05 Member No.: 23210 |
How is the ipod's decoding? better than other players, about even??? what bitrates and filetypes does it decode best?
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Lo-Fi Version | Time is now: 20th May 2013 - 05:56 |
