[Freeswitch-users] Tone detection How To
nandy1925 at gmail.com
Wed Jun 10 03:03:10 MSD 2015
The reason why I used tone_detect in spandsp is - cadence detection, too,
aside from frequencies. I detect the tones twice or even trice to prevent
false triggering. If you know the tone specs, use it.
On Wed, Jun 10, 2015 at 4:12 AM, Michael Jerris <mike at jerris.com> wrote:
> It sounds like a ring tone, if thats the case, you should probably work
> off the specs for that tone instead of the recording which might have other
> artifacts in it. What exactly is the full scenario where you need to
> detect an inband ringback tone?
> On Jun 5, 2015, at 3:51 PM, Naveen Tamanam <naveen32india at gmail.com>
> Hi Nandy,
> I am glad to see your reply. I am trying to detect the tone which sounds
> like a simple ring.
> and I can't guess when that could occur, so I listen for the tone through
> out the call. I am attaching the tone.
> On Thu, Jun 4, 2015 at 10:39 AM, Nandy Dagondon <nandy1925 at gmail.com>
>> What are you trying to do with tone_detect? Is it call progress? Fax
>> On Tue, May 19, 2015 at 4:55 AM, Naveen Tamanam <naveen32india at gmail.com>
>>> I am using following command for tone detection,
>>> tone_detect <uuid> <key> <tone_spec> [<flags> <timeout> <app> <args>]
>>> Many times I end with the false detection. In my case I haven't given
>>> all optional args.
>>> I just gave tone_detect uuid key tone_specs. It would be something
>>> tone_detect 8582g3b8-f7db-10e4-2ac4-c01885c1ffd3 tone_name
>>> Where frp1, frp2 and frp3 are the frequencies of few peak amplitudes of
>>> the tone.
>>> Those frequencies are detected through audacity by plotting spectrum,
>>> Spectrum specs are,
>>> Alogorithm: Spectrum,
>>> Fuction: Hanning window or Bartlett window
>>> Size: 512
>>> Axis: Log Frequencies
>>> Is there anything I am missing. Any suggestions are highly appreciated,
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