Re: DTMF tones over IP
On Mar 25 15:24:03, byronklipp...@ml1.net wrote: Is there a way to generate DTMF tones using the tools in base? I am trying to open a live audio path over IP from one node to another. The audio path is fed into a controlling device which interfaces with a VHF radio. In order to key-up the radio, the controlling device needs to see a DTMF code (1 to key, 0 to unkey). Any audio sent to the device between keying and unkeying, is sent to the radio and over air. I'm guessing an ssh-tunnel will server as the path, just not sure which framework can be used to record and play audio, See aucat(1) for general audio work. It also works nicely over ssh (see http://marc.info/?l=openbsd-miscm=136500465604928w=3 for inspiration). let alone generate DTMF. I would use the SoX package for this ... On Mar 25 17:06:50, fritz.k...@gmail.com wrote: play -n synth 0.5 sine 697 sine 1209 channels 1 play -n synth 0.5 sine 941 sine 1336 channels 1 ... but only slightly differently: play -c 1 -n synth 0.5 sine 697 sine 1209 gain -6 play -c 1 -n synth 0.5 sine 941 sine 1336 gain -6
DTMF tones over IP
Hello, Is there a way to generate DTMF tones using the tools in base? I am trying to open a live audio path over IP from one node to another. The audio path is fed into a controlling device which interfaces with a VHF radio. In order to key-up the radio, the controlling device needs to see a DTMF code (1 to key, 0 to unkey). Any audio sent to the device between keying and unkeying, is sent to the radio and over air. I'm guessing an ssh-tunnel will server as the path, just not sure which framework can be used to record and play audio, let alone generate DTMF. Any pointers? -- Byron Klippert byronklipp...@ml1.net c. 867-336-1306
Re: DTMF tones over IP
Not sure about playing remotely, but if you add the sox package, you get tools to generate files or directly to audio out. The following play the tones to your audio output: DTMF 1: play -n synth 0.5 sine 697 sine 1209 channels 1 DTMF 0: play -n synth 0.5 sine 941 sine 1336 channels 1 On Tue, Mar 25, 2014 at 3:24 PM, Byron Klippert byronklipp...@ml1.net wrote: Hello, Is there a way to generate DTMF tones using the tools in base? I am trying to open a live audio path over IP from one node to another. The audio path is fed into a controlling device which interfaces with a VHF radio. In order to key-up the radio, the controlling device needs to see a DTMF code (1 to key, 0 to unkey). Any audio sent to the device between keying and unkeying, is sent to the radio and over air. I'm guessing an ssh-tunnel will server as the path, just not sure which framework can be used to record and play audio, let alone generate DTMF. Any pointers? -- Byron Klippert byronklipp...@ml1.net c. 867-336-1306
