musilj
Electrical
- Oct 8, 2006
- 16
Hey all,
I am trying to decode a dtmf signal which according to the time plots in Matlab comprises of 5 digits. My problem is that i can't seem to find a way of detecting the start and end of the individual tones in the wavefile. I don't intend to use a fixed tone length, as this is not pratical when someone presses the key for a longer time. I also do not intend to use a fixed individual tone sample length, although chances are that it might be fixed in the wavefile i have. Could someone please advise on how i can pick up the silent portions between the tones?
hope it all makes sense
I am trying to decode a dtmf signal which according to the time plots in Matlab comprises of 5 digits. My problem is that i can't seem to find a way of detecting the start and end of the individual tones in the wavefile. I don't intend to use a fixed tone length, as this is not pratical when someone presses the key for a longer time. I also do not intend to use a fixed individual tone sample length, although chances are that it might be fixed in the wavefile i have. Could someone please advise on how i can pick up the silent portions between the tones?
hope it all makes sense