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Message from discussion flac to mp3
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Franklin  
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 More options Jul 9 2007, 7:02 am
Newsgroups: alt.comp.freeware
From: Franklin <franks...@nomail.com>
Date: Mon, 09 Jul 2007 12:02:07 +0100
Local: Mon, Jul 9 2007 7:02 am
Subject: Re: flac to mp3
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On 09 Jul 2007, dadiOH <dad...@guesswhere.com> wrote:

> flac2...@1step.com wrote:
>> On 08 Jul 2007, MAMEngineer <a...@ndrecei.ve> wrote:

>>> Franklin wrote:

>>>> [...]

>>> There is no such thing as conversion from FLAC to MP3.  The FLAC
>>> *has* to be expanded to WAV before it can be reduced to MP3.

>> Your reply implies at some point a wave file exist in the process.
>> Not sure what software you use, but never once in my converting of
>> flac to mp3 have I ever had a wav file as a result.

>> Input  = Flac, Output = MP3 and never a wav file exist on my PC.

>> I am not sayin there is not software that allows you to do it two
>> distinct steps, just that when I convert, never does a wave file
>> exist nor any temp file of any sort. If you can go from wave to
>> mp3, there is no technical reason you can't go from flac to mp3.

> You can't play your flac without a decoder.  The decoder expands
> the data to wave.  No wave file need be created.

"The decoder expands the data to wave" is inaccurate.  Maybe you mean
PCM instead of WAV.  But which PCM?  And what are it's defining
parameters?

OTOH if a WAV is actually created (as was originally suggested in this
thread) then conversion to that file could quite easily introduct
quantisation errors.  Going from that file to the target MP3 is going to
introduce its own set of quantisation errors.

There is nothing special about WAV-PCM.  It seems that the standard
audio CD is what many people see as reference quality ~ even though CD
audio is far from true hi-fi.  The red book on CDDA defines the
technical parameters of an audio CD but that does not make such a
standard the best there is.

Of course although the PC can extract/rip from a CD and then create WAV
files, the audio on the CD itself is not stored as a WAV file but
something closer to Apple's AIFF.

> The same is true when making an MP3...the flac is decoded to wave.
> There is no need to create a wave *file* during that process
> either.

Saying "the flac is decoded to wave" is incorrect as internal formats
are not necessarily PCM (Wave).

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