[Vorbis] MCDT,FFT and more

[Michael Smith]

On 6/10/05, evil <evilf at gmx.de> wrote:
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> I write a work over Vorbis. ¶ 
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> ¶Now I have a few questions to the function. ¶ 
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> ¶For what is the MDCT used? ¶ 

That's a fundamental part of  the format. After windowing, the data is
transformed into the frequency domain using the MDCT - the
specification has full details.

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> ¶For what is the FFT used? ¶ 

The reference encoder does FFTs during analysis, but it's not part of
the format.

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> ¶How is the expiration with the encodieren? ¶In the reference to the
> MDCT,FFT and the hearing model . ¶ 

No idea what this question is about, sorry.

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> ¶Is there a volume fragmentation in Subband as MP3? ¶ 

Vorbis doesn't have subbanding like mp3.

Mike