0Dr.Bill 10 years ago ReplyUpvoteyou can find DTMF decoders and associated gear at any ham radio dealer
011010010110 10 years ago ReplyUpvotethe 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
0NachoMahma11010010110 Answer 10 years ago ReplyUpvote. Yep. Searching for DTMF decoder turns up a lot of good stuff.
Discussions
10 years ago
you can find DTMF decoders and associated gear at any ham radio dealer
10 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
Answer 10 years ago
. Yep. Searching for DTMF decoder turns up a lot of good stuff.