📞 DTMF Tone Generator
Free online tool to generate DTMF tones, touch tones, and dial tones for testing and education
0
Tones Generated
16
DTMF Tones
100%
Browser Based
🎛️ DTMF Generator
Tone Duration
500ms
Volume
70%
🔢 Sequence Generator
Sequence will appear here...
📊 Visualization
Real-time Oscilloscope
60 FPS
Low Frequency
697 Hz
High Frequency
1209 Hz
What is DTMF Tone Generator?
DTMF (Dual-Tone Multi-Frequency) is the signal system used in telecommunication for dialing numbers and navigating automated systems. Each key on a telephone keypad generates a unique pair of tones - one from a low-frequency group and one from a high-frequency group.
How to Use This DTMF Generator
1. Click DTMF Keys: Press any key on the virtual keypad to generate its tone
2. Adjust Settings: Use sliders to control duration and volume
3. Generate Sequences: Enter phone numbers or custom sequences
4. Use Special Tones: Generate dial tone, busy signal, ring tone
5. Visualize: Watch real-time oscilloscope visualization
DTMF Frequency Reference Table
| Key | Low Frequency | High Frequency | Use Case |
|---|
Applications & Use Cases
- Telecommunications Testing: Test phone systems and PBX equipment
- Security Systems: Test alarm system communications
- Educational Purposes: Learn about telecommunications technology
- IVR Testing: Test Interactive Voice Response systems
- Remote Controls: Test garage door openers and other remotes