bobcat1 said:Hi
SI-LABS have an app not for the 8051Fxxx for decoding DTMF signal all written in C language
www.silabs.com
All the best
Bobi
Davood Amerion said:Hi;
you also can search the web for Goertzel algorithm.
Regards,
Davood Amerion
My dear, I have just skimed the Datasheet of MT8880 as well as MT8870. But it has no pin that says when the telephone B pick the handset up. If you could do this with MT8870 or MT8880, pls show me in detail.shmily said:use MT8880
phucdull said:Suppose that a telephone (A) calls another (B). So how to know when the B picks the handset up?.
I am using MT8870 to decode numbers pressed by user. How to know when thi B picks handset up by using a MCU such as ATMEGA8515L
Ok, my problem is like to you, weather the otherside picked or not.Picstudent said:If this is your situation you can detect it by a simple op amp comparator. But my problem is how to detect weather the otherside picked or not.
with regards
picstudent
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