[Freeswitch-users] detecting tone

[Piotr Gregor]

Hi Babak,

you can also try avmd module for a detection of single frequency sound.
I have tested avmd on your audio and it detected 425.69 Hz frequency
when it's variance threshold was set to 0.0006, 446.23 Hz with default
threshold of 0.00025.


2016-04-07 12:32:05.820909 [NOTICE] switch_channel.c:1104 New Channel
sofia/internal/1000 at 192.168.1.27 [4e41e5be-51a0-42fa-87b5-8fde76744530]
2016-04-07 12:32:06.060908 [INFO] mod_dialplan_xml.c:637 Processing
beautiful display name <1000>->1705 in context default

    api avmd 4e41e5be-51a0-42fa-87b5-8fde76744530 start

    Content-Type: api/response
    Content-Length: 89

    +OK
     [4e41e5be-51a0-42fa-87b5-8fde76744530] [sofia/internal/
1000 at 192.168.1.27] started!

2016-04-07 12:32:12.760908 [INFO] switch_core_media_bug.c:701 Sending early
media
2016-04-07 12:32:12.760908 [NOTICE] sofia_media.c:92 Pre-Answer
sofia/internal/1000 at 192.168.1.27!
2016-04-07 12:32:12.760908 [INFO] mod_avmd.c:279 Avmd session initialized,
[8000] samples/s
2016-04-07 12:32:12.760908 [INFO] mod_avmd.c:739 Avmd on channel
[sofia/internal/1000 at 192.168.1.27] started!
2016-04-07 12:32:17.480907 [NOTICE] mod_avmd.c:919 <<< AVMD - Beep
Detected: f = [425.688780], variance = [0.000533] >>>


Avmd works for single frequency tones. Be sure to checkout latest master
(this module
is yet not of a production quality at this moment).

cheers,
Piotr
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