810Views3Replies

Author Options:

how can I decode telephone tone? Answered

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
Dr.Bill
Dr.Bill

11 years ago

you can find DTMF decoders and associated gear at any ham radio dealer

0
11010010110
11010010110

12 years ago

the tones (called dtmf tones) are a combination of 2 sounds each

(on the phone try 123 vs 147 to see the difference)

they can be decoded with ffilters for the appropriate frequencies (you can find online) or with prebuilt dtmf chip like here