On Thu, Sep 19, 2013 at 5:47 AM, Keith Goobie <keith@goobie.org> wrote:

Good morning All.

I am looking for the message that Jim WB6NIL put out there that had to do with modifying the dsp.c code so that it did not incorporate the RELAXED_RADIO parameters.

One parameter is the length of time that a DTMF signal must be present before it is determined not to be a false signal.  
[root@Server6 main]# diff  dsp.c.default  dsp.c

165c165,166
< #define DTMF_TO_TOTAL_ENERGY    ((digitmode & DSP_DIGITMODE_RELAXDTMF) ? 26.0 : 42.0)
---

> #define DTMF_TO_TOTAL_ENERGY    ((digitmode & DSP_DIGITMODE_RELAXDTMF) ? 38.0 : 42.0)  /* CAH changed 26 to 38 */

This change when implemented, did eliminate a noticeable number of audio pops associated with DTMF false-ing.  

The message from Jim spoke to bypassing the RELAXED parameters in total.

I am going through  the archives and I have not found it yet.

Thanks in advance.

Keith

--
keith@goobie.org
Keith Goobie
Richmond Hill, ON, CANADA

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