[Speex-dev] lpcSize

Jean-Marc Valin jmvalin at jmvalin.ca
Mon Apr 11 14:29:17 PDT 2011

On 11-04-11 11:05 AM, Shridhar, Vasant wrote:
> I would like to make lpcSize a multiple of 4. In the current library for
> narrow band mode lpcSize is currently set to 10. I would like to
> increase this 12 for optimization reasons. Is it a simple matter of just
> changing lpcSize in the structures in mode.c or are there other
> implications to doing this?

Nothing major except you'd need to rewrite the LSP quantizer, retrain 
half the codebooks, change the bit-allocation and break compatibility 
with the format.



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