[App_rpt-users] RELAXED RADIO parms

[Keith Goobie]

Thanks, will do.

Keith


On 9/19/13 10:13 AM, "David KE6UPI" <dshaw at ke6upi.com> wrote:

> look for:
> 
> Post Date 6/13/12
> Subject RTCM falsing DTMF
> 
> Please read it all !!!!
> 
> David
> 
> On Thu, Sep 19, 2013 at 5:47 AM, Keith Goobie <keith at 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 at 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 at goobie.org
Keith Goobie
Richmond Hill, ON, CANADA

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