[vorbis] bit rate

[Vincent]

thanks for your answers,

i am reading the specifications, and i  don't understand it all, i have one
other question:

i undestand the bitpacking operation.
but what about the codebook thing?
is it made for the decoder to know how the bit where packed, to know what
are the lenght of the different entries stored in the bitstream?
i see that the codebook_entries is made to store the number of entries, but
where is the size of the different entries stored in?

<p>----- Original Message -----
From: "Graham Mitchell" <graham at grahammitchell.com>
To: <vorbis at xiph.org>
Sent: Monday, September 22, 2003 12:27 PM
Subject: Re: [vorbis] bit rate

<p>> > could someone give me the defintion of bitrate, and explain me why the
> > bitrate is variable in vorbis?
>
> Beni gave an excellent explanation, but I should also plug my own Vorbis
> introduction, which spends a fair amount of time discussing bitrates.
> http://grahammitchell.com/writings/vorbis_intro.html
>
> As to why it is variable in Ogg Vorbis, the short and sweet version is
> "because some passages are harder to encode than others, and it's foolish
> not to 'save' bits on easier sections so you can use them on tougher
> sections instead."
>
> --
> Graham Mitchell - computer science teacher, Leander High School
> "Christians and their opponents again and again expect that some new
> discovery will either turn matters of faith into matters of knowledge or
> else reduce them to patent absurdities. But it has never happened. What we
> believe always remains intellectually possible; it never becomes
> intellectually compulsive. I have an idea that when this ceases to be so,
> the world will be ending."
> -- C.S. Lewis, from "Religion and Rocketry"
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