[arm-allstar] dtmf audio level

[Joe Moskalski]

Have you swept the audio response from the radio going into your usb audio
device? If the audio conming from the receiver into the usb device isn't
de-emphasized you will need to add deemphasis=yes to your simpleusb.conf
file. If there isn't de-emphasis anywhere the higher frequency component
may be clipped.

On Mon, Aug 15, 2022 at 8:44 PM "Don Sayler via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> The tones are coming in over one of 4 repeaters, through the controller. I
> did run simpleusb to set the audio level into the node. I'll try the
> de-emphasis setting.
>
> We are planning a site visit on Friday to adjust the levels on each
> repeater.
>
> On Mon, Aug 15, 2022, 5:01 PM David McGough <kb4fxc at inttek.net> wrote:
>
> >
> > Don,
> >
> > Where are the DTMF tones in question originating?  A radio or the
> external
> > controller?
> >
> > You need to set the audio levels using simpleusb_tune_menu (SUSBTM)
> (admin
> > option #12).  You'll see a graphical level display from SUSBTM option #2.
> > The RX level should typically be between the 3KHz and 5KHz points.
> >
> > If your controller is outputing "flat" RX audio, make sure to turn on
> > De-emphasis, menu option G.
> >
> >
> > 73, David K4FXC
> >
> >
> >
> > On Mon, 15 Aug 2022, "Don Sayler via ARM-allstar" wrote:
> >
> > > Our node isn't recognizing dtmf tones. After doing a bit of
> > experimenting,
> > > I have figured out that the audio level is too high and distorting the
> > > tones. But the voice audio level is fine. Is there a way to adjust the
> > > level of the dtmf tones individually? I didn't see one, and I'm not
> even
> > > sure how that would work. But I figured I'd ask the question...
> > >
> > > Thanks.
> > > Don
> > > _______________________________________________
> > >
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> > >
> > > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
> > >
> >
> >
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