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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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This archive was generated by hypermail 2b29 : Mon Dec 23 2002 - 22:00:14 EST