[Speex-dev] A technical question about the speex preprocessor.

Jean-Marc Valin
Tue, 21 Jul 2009 23:44:40 -0000

Hi John,

M(;;) is the confluent hypergeometric function.

	Jean-Marc

John Ridges a ?crit :
> Hi,
>
> I've been trying to re-create the table in the function
"hypergeom_gain"
> in preprocess.c, and I just simply can't get the same values. I get the
> same value for the first element, so I know I'm computing gamma(1.25)^2
> correctly, but I can't get the same numbers for M(-.25;1;-x), which I
> assume is Kummer's function. Is it possible that the comment is out of
> date and the values of Kummer's function used to make the table were
> different? Any help would be greatly appreciated.
>
> John Ridges
>
>
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