Matt, Okay the good news is vmd should be able to handle these cases. The bad news is for whatever reason they are not getting detected at the moment.
vmd-not-panasonic-home-ans.wav is a sine at ~1400Hz you can change MAX_FREQ to 1450 and play with MIN_AMPL if that still doesn't help. The following seem to use the same beep: vmd-not-tmobile.wav is a sine at ~750Hz but has a bit of noise vmd-not-sprint.wav is a sine at ~750Hz but has a bit of noise vmd-not-sprint.wav is a sine at ~750Hz but has a bit of noise You can try to play with these values: POINTS 32 VALID 22 MAX_CHIRP 22 If that doesn't work let me know I will try to improve the algorithm to detect the providers. Cheers! Eric des Courtis On Mon, Aug 17, 2009 at 1:52 PM, Matthew Fong<mattdf...@gmail.com> wrote: > Hi Eric, > Thanks for the response. I had tried emailing you @brenbria.com and the > email had bounced, thanks for responding to my mail. > If you'd be interested I .zipped up my sample voicemail beeps > at http://bandcon.hellohunter.com/vmd_wav.zip > I'm relatively new to telephony, but can you point me in the right direction > for figuring out if the beeps are sinewaves. About as far as I've come with > audio is being able to open the .wav files in audacity. Any website > recommendations I can read? Thanks so much. > --matt > > On Mon, Aug 17, 2009 at 10:29 AM, Eric des Courtis > <eric.des.cour...@gmail.com> wrote: >> >> Matt, >> >> You must first capture the audio beeps and verify that they are sine >> waves. If not, simply tweaking the algorithm will not give you better >> results. >> >> It might be possible to use FFT and I would be happy to help you >> implement such a solution but keep in mind FFT is very very demanding >> on the hardware. Ideally what you want to find out is what functions >> was use to generate the beep in the first place so that it can be >> detected. Is it two sines waves like in DTMF? Or something more >> complex? >> >> Anyway my email is eric.des.cour...@benbria.ca. >> >> Cheers. >> >> Eric des Courtis >> >> On Mon, Aug 17, 2009 at 12:26 AM, Matthew Fong<mattdf...@gmail.com> wrote: >> > I tried emailed Eric, seeking advice on this, but his email (the one in >> > the >> > source code) is bouncing email (invalid user), so thought I would ask >> > here >> > instead. If anyone has eric's new email address, I'd be interesting in >> > it. >> > >> > I did some tests with mod_vmd this afternoon, but I'm only finding about >> > 33% >> > of the voice mail beeps and did have 1 false-positive in my test of >> > 7 voice >> > mail machines. I've recorded the audio of the session in .wav files that >> > were both successful and not, as a comparison. I can upload the .wav >> > files >> > if they would be useful. >> > mod_vmd works great for voicemails of Skype Users, and kall8.com, but >> > has >> > issues dealing with mobile phone carriers. >> > sprint - not successful >> > tmobile - not successful >> > verizon - not successful >> > panasonic home answering machine system - not successful >> > kall8 - SUCCESS >> > skype - SUCCESS >> > I'm wondering if you can recommend a simple fix, like changing some of >> > the >> > constants like MAX_FREQ, or MIN_TIME at the top of the mod_vmd.c source >> > file, or if better success requires more complex analysis. Do you have >> > any >> > recommendations on how this might be done? Listening to the .wav's >> > its apparent the beeps are not as loud for the mobile phone carriers as >> > they >> > are with skype and kall8. Any guidance would be greatly appreciated. >> > --matt >> > hello hunter >> > http://www.hellohunter.com >> > voice broadcasting & hosted dialer >> > _______________________________________________ >> > FreeSWITCH-users mailing list >> > FreeSWITCH-users@lists.freeswitch.org >> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users >> > http://www.freeswitch.org >> > >> > > > _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
