Forum >Using Microphone in DTMF Module
Using Microphone in DTMF Module
bogdanmyr 2016-05-22 21:29:29 17931 Views6 Replies Hello everyone 
I recentely bought DTMF sensor, picture and link below
https://www.dfrobot.com/index.php?route=product/product&keyword=dtm&product_id=1070
I set it up and can read DTMF signal over 3.5 jack but I could not find any information how to use microphone in order to listen DTMF sound. Like if I want to push buttons on my phone and it will made dtmf sound , then microphone can read it and show me numbers in arduino terminal , just like with 3.5 jack but via Microphone.
If anyone has any information about it, please help.
2016-06-01 08:04:03 Hi Leff,
I also haven't find any information about it.
Seems like the only way is to buy shield and there are pins for connecting microphone, so can connect better microphone, hopefully. bogdanmyr
I also haven't find any information about it.
Seems like the only way is to buy shield and there are pins for connecting microphone, so can connect better microphone, hopefully.
bogdanmyr 2016-05-26 18:18:34 Not mentioned after I finding all the places about how to do settings on that, seems the only way to enhance the recognition is to increase the volume of your phone. Leff
Leff 2016-05-26 04:32:15 Hi Leff !
You are totally right, I just find it out last night and the problem was in my phone, not a sensor or a lib, ohh
Though the sensitivity of this microphone is very low. Do you know how can I use higher quality external microphone ? bogdanmyr
You are totally right, I just find it out last night and the problem was in my phone, not a sensor or a lib, ohh
Though the sensitivity of this microphone is very low. Do you know how can I use higher quality external microphone ?
bogdanmyr 2016-05-24 22:43:16 Hi Leff , thanks for your reply !
I don't want to generate the sound using this module when I hit the number on my phone, but in fact I want the microphone in the module to be able to detect the sound of the numbers being pressed on my phone and show those numbers on the Arduino terminal. Do you have any idea how to deal with it ?
Thanks in advance
bogdanmyr
I don't want to generate the sound using this module when I hit the number on my phone, but in fact I want the microphone in the module to be able to detect the sound of the numbers being pressed on my phone and show those numbers on the Arduino terminal. Do you have any idea how to deal with it ?
Thanks in advance
bogdanmyr 