https://unframework.github.io/dtmf-detect/

WebAudio demo to detect touch-tone DTMF codes (phone keys)
https://unframework.github.io/dtmf-detect/

Last synced: about 1 month ago
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WebAudio demo to detect touch-tone DTMF codes (phone keys)

• Host: GitHub
• URL: https://unframework.github.io/dtmf-detect/
• Owner: unframework
• Archived: true
• Created: 2016-11-07T02:36:01.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2017-01-27T19:44:24.000Z (almost 8 years ago)
• Last Synced: 2024-10-02T08:46:25.935Z (2 months ago)
• Language: CoffeeScript
• Homepage: https://unframework.github.io/dtmf-detect/
• Size: 424 KB
• Stars: 28
• Watchers: 1
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md

Awesome Lists containing this project

• awesome-ctf-resources - DTMF Detection - Audio frequencies common to a phone button. (Steganography)

README

        
# In-browser DTMF Detection Demo

Using WebAudio to detect DTMF codes (touch-tone phone keys). Live demo here: https://unframework.github.io/dtmf-detect/

## References

- https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling

- http://dsp.stackexchange.com/questions/15594/how-can-i-reduce-noise-errors-when-detecting-dtmf-with-the-goertzel-algorithm#comment26780_15594

- https://github.com/mmckegg/audio-rms

- https://github.com/antoinet/webaudio/blob/master/dtmf-demod.html (original FFT approach which did not pan out)

- http://jetcityorange.com/dtmf/