[vorbis] bit rate

[Karthik M]

codebooks define how a (binary) file is organized.  An application may
have to read the codebook first to correctly read the contents of the data
file.

To see how vorbis implements codebooks, take a look at vorbis/codebook.c

> 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?
>
>
> ----- 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
>
>
>> > 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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>
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<p><p>-------------------------------------------
Karthik M
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