[Freeswitch-users] Tone detection questions spandsp.conf.xml

[Gonzalo Gasca Meza]

Hi Freeswitchers:

I have been trying to detect *India* ringback tone using spandsp.conf.xml

My understanding is that* f1* and *f2* are the Frequency and *min* and *max* is
the Tone duration value. For example:

*Based on ITU-T reference India progress tones are:*

ring = 400*25/400,0/200,400*25/400,0/2000

*Questions*

a) How to show the Tone frequency received?
b) What is the meaning for the values assigned to f1 and f2 in debug mode.
I see possible values:

   - -1
   - 1
   - 2


c) Is there an option to configure modulation for Tone frequency as
specified in ITU standard (*25 above)?
d) Sample configuration will be appreciated.

*Configuration*

      <tone name="RING_TONE">

         <element freq1="400" freq2="0" min="384" max="400"/>

         <element freq1="0" freq2="0" min="200" max="224"/>

         <element freq1="400" freq2="0" min="384" max="400"/>

         <element freq1="0" freq2="0" min="1968" max="1984"/>

        </tone>
When debugging:

I have enabled already debug level to 2.

2017-02-13 02:59:32.080389 [DEBUG] mod_spandsp_dsp.c:705 Tone segment:* f1
= 1, f2 = 2, duration = 400*
2017-02-13 02:59:32.300524 [DEBUG] mod_spandsp_dsp.c:705 Tone segment:* f1
= -1, f2 = -1, duration = 224*
2017-02-13 02:59:32.680369 [DEBUG] mod_spandsp_dsp.c:705 Tone segment:* f1
= 1, f2 = 2, duration = 384*
2017-02-13 02:59:34.680384 [DEBUG] mod_spandsp_dsp.c:705 Tone segment:* f1
= -1, f2 = -1, duration = 1984*


http://pastebin.com/xm8xN9R3

Thanks

-Gonzalo
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