You need to double click something in the flowgraph and click ok/cancel before it will allow you to run the flowgraph. It's a weird GRC bug.
Mike -- Mike Jameson M0MIK BSc MIET Ettus Research Technical Support Email: supp...@ettus.com Web: http://ettus.com On Mon, Jul 14, 2014 at 3:40 PM, <j...@moudy.com> wrote: > I pulled your flow graph but I am missing a number of variable settings. > Is there another piece that goes with this? > > Looks intriguing and fun to play with. > > Jim > > -------- Original Message -------- > Subject: Re: [Discuss-gnuradio] Squelch and the KSHT sounds ... > From: Mike Jameson <mike.jame...@ettus.com> > Date: Mon, July 14, 2014 5:31 am > To: j...@moudy.com > Cc: gnuradio <discuss-gnuradio@gnu.org> > > The 'Power Squelch' block in GRC is my favourite and I would recommend > using this one. > > Have a look at the following GRC flow graph for a working example that > uses the power squelch block: > > > https://raw.githubusercontent.com/m0mik/scanoo/master/apps/scanoo.com_rx.grc > > Note that the 'Ramp' setting is the number of samples it takes at the > start and end of a detected signal for the volume to go from 0% to 100% and > 100% to 0%, and the 'Alpha' setting is the signal average alpha just like > in the FFT WX GUI widget. 1 disables the averaging and will give you the > fastest cutoff at the end, however if you have signal flutter then the > audio will be choppy. I'd recommend using between '0.01' and '0.001' in > the power squelch block for the 'alpha' setting. > > Mike > > -- > Mike Jameson M0MIK BSc MIET > Ettus Research Technical Support > Email: supp...@ettus.com > Web: http://ettus.com > > > On Sun, Jul 13, 2014 at 12:05 AM, <j...@moudy.com> wrote: > >> I've deployed a gnuradio application which records a morning maritime >> radio program in a Caribbean community. The recording can be played back >> online for people who missed the 'news'. >> >> The application works famously. However, I've got a request for an >> enhancement that comes up a lot! Everyone is used to hearing the 'ksht' >> sound after the mike is unkeyed. However, the squelch function I use in >> GnuRadio 3.7.1 doesn't seem to have a setting which affects how quickly the >> squelch gate closes (its instantaneous). There is an Alpha and a Ramp >> function, but they don't seem to affect the result (wouldn't expect Alpha >> to). >> >> Does anyone have any insight into the code for this block? >> >> Jim >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
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