DTMF: Difference between revisions
Jump to navigation
Jump to search
(freq table) |
m (✆ moved page Phreaking/DTMF to DTMF over redirect) |
||
(One intermediate revision by one other user not shown) | |||
Line 4: | Line 4: | ||
{| class="wikitable" | {| class="wikitable" | ||
|+ DTMF keypad frequencies | |+ DTMF keypad frequencies | ||
|- | |- | ||
!align=center| | !align=center| | ||
Line 38: | Line 38: | ||
https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling | https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling | ||
== Goertzel == | == Goertzel == |
Latest revision as of 01:20, 8 March 2017
Intro[edit]
1209 Hz | 1336 Hz | 1477 Hz | 1633 Hz | |
---|---|---|---|---|
697 Hz | 1 | 2 | 3 | A |
770 Hz | 4 | 5 | 6 | B |
852 Hz | 7 | 8 | 9 | C |
941 Hz | * | 0 | # | D |
https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling
Goertzel[edit]
https://en.wikipedia.org/wiki/Goertzel_algorithm