How does one figure this out?
_J
In the new year, Mathew Hendry wrote:
> > From: "Paul Hartman" <[EMAIL PROTECTED]>
> >
> > Somebody pointed out to me that somewhere in the process of encoding a WAV
> > to MP3, then decoding back to WAV some extra frames are added at the end
> > (appears to be silence?). re-encoding and decoding this same thing
> steadily
> > makes it grow each time. It seems not necessarily to be any particular
> > encoder or decoder, or any specific bitrate. Is there a explaination for
> > this, and is there any way to prevent or correct this (so that a mp3
> > decoded back to WAV can be as close as possible to the original)?
>
> The explanation is twofold:
>
> 1) Encoding and decoding delays - of the order of 1000 samples; encoder- and
> decoder-specific
> 2) Padding to frame bounaries - on average adds 1152/2 samples
>
> The delays add silence to the beginning of the decoded signal; the padding
> adds silence to the end.
>
> If you know the combined (encoder + decoder) delay and the length of the
> original signal, you can compensate for both effects with a little editing.
>
> -- Mat.
>
>
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> MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
>
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