DTMF Tone Extractor
The following are the frequencies used for the DTMF system, which is also referred to as tone dialling. The signal is encoded as a pair of sinusoidal (sine wave) tones which are mixed with each other. DTMF is used by most PSTN (public switched telephone networks) systems for number dialling, and is also used for voice-response systems such as telephone banking and sometimes over private radio networks to provide signalling and transferring of small amounts of data.
Category : Communication
Reviews (18)
Does not work on Galaxy S5 SM-G900P. Doesn't appear to be doing anything when I hit aquire, but does work on friend's Galaxy SII.
Good value for free program, but after 3 day testing is by opinion better another payed program which is more sensitive to decode and with near no error decoding from FM repeaters + possibility to send DTMF from keypad or from memory.
Saved me a lot of time while setting up some modems using DTMF tones.
Did not understand the "4 " button on the phone DTMF.
Great for testing dtmf tones over cellular connections.
Wish I could decode by ear, but this app will suffice until I train myself!
Doesn't seem to access the mic
Interprets a constant tone as a sequence of numbers.
I tried for 30 minutes to extract 2 sets of digits and watched the display miss digits completely, double or triple others, and give erroneous numbers on some!
Exactly what I wanted and it works great. Many thanks.
I love the idea, but couldn't get it to display any numbers. All I saw was a graphic display that is as hard to decipher as listening to the audio.
I was just having thus idea the other day and Thank you Rafael for your efforts
It's a great help for me at my everyday.
its just bad app
App can not be moved to SD memory
Says free but its a time demo
Life saver for a telephone tech
GD app but could be awesome if the values could be stored in a variable so that it could be used with tasker.....and no same numbers are taken just the next moment