Re: [PATCH] (Was: i4l dtmf errors)

Roy Sigurd Karlsbakk (roy@karlsbakk.net)
Mon, 6 Jan 2003 10:57:23 +0100

hi

thanks for the patch, but sorry - it really didn't help anything. still
meep-meep's all over ...

roy

On Monday 16 December 2002 18:44, Wolfgang Fritz wrote:
> <veröffentlicht & per Mail versendet>
>
> Kai Germaschewski wrote:
> > On Sat, 14 Dec 2002, Wolfgang Fritz wrote:
> >> > it seems isdn4linux detects DTMF tones from normal speach. This is
> >> > rather annoying when using i4l for voice with Asterisk.org. This is
> >> > tested on all recent kernels
> >>
> >> The DTMF detection is broken since kernel 2.0.x. I have a patch for a
> >> 2.2 kernel which may manually be applied 2.4 kernels with some manual
> >> work. It fixes an overflow problem in the goertzel algorithm (which
> >> does the basic tone detection) and changes the algorithm to detect
> >> the DTMF pairs. If interested, I can try to recover that patch.
> >
> > If you dig out that patch and submit it (to me), I'm pretty sure
> > there's a good chance of it going into the official kernel. ISTR there
> > was talk about that earlier, but nothing ever happened.
> >
> > --Kai
>
> Here is the patch against 2.4.20.
>
> Wolfgang
>
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-- 
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356


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