[vorbis-dev] Concatenating waves

[Michael Smith]

On Tuesday 04 May 2004 03:13, Adriano Almeida wrote:
> That's partially true. I've tested some files and the conclusion is:
>
> for small files, with the same audio quality and number of channels, the
> codebooks are USUALLY the same, but not alwaays.
> But what about the floors? I don't thing they are the same, cause if you
> have a pcm with mostly high frequencies and another with only low freq,
> there is no sense that both have the same floors.
> Concatenating all in one file I guarantee they all will have same cfg. But
> everything has its price, isn't it??? heheh
>

With the same encoder settings, and the same input parameters (sample rate, 
number of channels), and the same encoder version, the codebooks will 
_always_ be identical.

The headers come at the start, so the encoder has to decide what headers to 
use before it actually looks at the audio content - so what frequencies are 
in the file can't have any effect.

Mike

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