Sean Costello wrote:

> Hi all:
>
> Just started experimenting with LPC.  So far, every sound I have tried
> to produced has ended up sounding overly "liquid" - i.e. the filtering
> seems to change drastically between frames

>From my experience, this seems unavoidable. I reccommend you -assuming you
use LPC to resynthetise voice- to record slowly and clearly your voice, and
then apply some noise reduction and compression. The hopsize parameter in
the Lpanal routine can make a great difference ... if the source signal is
stable enough you can set it pretty large and you´ll be less exposed to such
artifacts (I think!). Much more problematic seems to be the pitch tracking
routine which won´t work at all unless the voice is restricted in a narrow
frequency range and you set the min.&max. frequencies in Lpanal enough
accurately...
Anyway PVoc routines are much better.