Speex dev - Feb 2006 - Speex Command line, Changing the LPC order and modifying the codebook

Hi,
can someone help me understand and experiment with Speex in a better way than my
knowledge. I want to change the LPC filter order of the Speex algorithm.  I
think I need to change the LPC order( or lpcSize) in modes.c file. but to make
it work I need to modify the codebook also, can someone tell me how to go about
changing the codebook entries to support the changed order of prediction.
Please help me on this asap   

bye
devilal


		
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Le mercredi 08 f?vrier 2006 ? 19:44 -0800, devilal sharma a ?crit
:
> Hi,
> can someone help me understand and experiment with Speex in a better
> way than my knowledge. I want to change the LPC filter order of the
> Speex algorithm.  I think I need to change the LPC order( or lpcSize)
> in modes.c file. 
Right.
> but to make it work I need to modify the codebook also
right.
> , can someone tell me how to go about changing the codebook entries to
> support the changed order of prediction.
You also need to change the lsp quantization functions. They are the
ones using the codebooks.

That being said, I don't see much interest in playing with the LPC
order. There's plenty of areas for improvements that don't require
incompatible changes like this one.

	Jean-Marc