[xiph-cvs] cvs commit: speex/libspeex lsp.c nb_celp.c

[Segher Boessenkool]

JM, are you on the cvs at xiph.org list?

> +         /* LSP x-domain to angle domain*/
> +         for (i=0;i<st->lpcSize;i++)
> +            st->lsp[i] = acos(st->lsp[i]);

It's probably a lot faster (and more stable) to generate the lsp y-domain
as well, and use acos2() on it...

Or, depending on if you do much more processing before quantizing the angle
values or not, you might just leave it in the x-domain and quantize there
(so it becomes a search operation instead of an arccos).

<p>Cheers,

Segher

<p>--- >8 ----
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