[arm-allstar] DTMF Recognition

[Chris Smart]

Ok, I'll try the DCS filter first, because that 
seems to be less objectionable. than the PL one.

At 06:02 PM 3/28/2020, you wrote:
>Oh yeah, I can tell you from experience that 
>turning off all the filters tends to screw up 
>DTMF recognition. Depending on the node radio, 
>this may make it work zero percent of the time. 
>I thought, as one of my node radios (baofeng) 
>has a high pass filter anyway, and won't pass 
>CTCSS to the network with filters disabled, it 
>would be enough, but I noticed a lot of DC 
>offset and other stuff when I tried that, and 
>less reliable DTMF recognition. FWIW, my 
>Motorola Radius SM50, even with the steepest 
>highpass filter on HamVoIP, definitely sounds 
>fuller than the Baofeng, but this should 
>probably not surprise you much. Flat output with 
>no filtering feeding a software highpass rather 
>than a filter stack, etc. On 3/28/2020 4:52 PM, 
>"Chris Smart via ARM-allstar" wrote: > Thanks 
>Doug. > > So I can't get away with PL and DCS 
>filters off? I like the slightly > improved 
>audio doing that, but maybe that's my 
>problem? > > At 04:48 PM 3/28/2020, you 
>wrote: >> Chris, >> >> Â Not sure why you are 
>experiencing that but in general DTMF works >> 
>fine on >> most all radios assuming levels and 
>equalization are correct. I use >> THF6's, >> 
>Baofengs, Yaesu mobile, etc and I never have any 
>problems. You said >> levels >> are at 500. That 
>is a starting point and there is no reason it 
>has to >> stay >> there. Set the levels for the 
>radios you are using trying to average >> 
>between highest and lowest level. All radios are 
>a little different. Use >> the Asterisk client 
>to observe what is working and what is not. 
>It >> displays >> the decoded character as you 
>key it. Make sure you have the PL or DCS >> 
>filter turned ON, DCS preferred and that the pre 
>or de-emphasis is >> not on >> if not 
>needed.  Set the levels so that when you speak 
>it peaks to >> 6khz or >> so. The client will 
>give you an idea what digits are not 
>working. >> >> >> *73 Doug* >> >> *WA3DSP* >> >> 
>*http://www.crompton.com/hamradio 
><http://www.crompton.com/hamradio>* >> 
>_______________________________________________ > 
> > >> ARM-allstar mailing list >> 
>ARM-allstar at hamvoip.org >> 
>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar  
> >> >> Visit the BBB and RPi2/3/4 web page - 
>http://hamvoip.org > > 
>_______________________________________________ > 
>  > ARM-allstar mailing list > 
>ARM-allstar at hamvoip.org > 
>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar  
> > > Visit the BBB and RPi2/3/4 web page - 
>http://hamvoip.org 
>_______________________________________________ 
>ARM-allstar mailing list ARM-allstar at hamvoip.org 
>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar 
>Visit the BBB and RPi2/3/4 web page - http://hamvoip.org