Tool to decrypt/encrypt DTMF codes. Dual-tone multi-frequency DTMF codes are combinations of sound frequencies used in phones when dialing numbers.

This tool alows you to encode or decode DTMF (dual-tone multi-frequency) signals. Use this slider to set the duration of the tones. Use this dialpad to create the corresponding DTMF tones. You …

Aug 30, 2025 · DTMF Tone Generator with Decoder is useful for testing DTMF tones in communications, DIY electronic projects and other applications. This app can generate & play …

4 days ago · A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over …

I thought this was a fun project to do in my free time to get the basic idea of how DTMF signaling works and was mainly inspired by this scene from The Hummingbird Project where Anton sent …

DTMF AUDIO FREQUENCY ANALYSIS UPLOAD WAV FILE Drag and drop file hereLimit 200MB per file • WAV Browse files

Dual-tone multi-frequency (DTMF) signaling is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other …