Tone Generator: Online Frequency & Sound Wave Generator
Generate high-precision audio tones from 20 Hz to 20,000 Hz using sine, square, sawtooth, and triangle waveforms.
Privacy First: 100% Client-Side Processing
Processed in your browser. Files are never uploaded.
How to Use the Tone Generator: Generate Pure Sine, Square & Saw Waves
- 1Choose your waveform type (Sine wave recommended for pure tones).
- 2Enter or slide frequency from 20 Hz to 20,000 Hz.
- 3Adjust volume slider and click 'Play Tone'.
Formula & How It Works
Web Audio Oscillator Synthesis
Synthesizes mathematical waveforms: y(t) = A × sin(2π × f × t). Source: W3C Web Audio API.
Worked Examples
Concert Pitch A4
Input: Frequency: 440 Hz, Wave: Sine
Explanation: Standard concert pitch used worldwide.
Frequently Asked Questions
What is the difference between sine and square waves?▼
Sine waves produce a single pure harmonic frequency, while square waves contain rich odd harmonics that sound buzzy and retro.
Quick Reference & Conversion Table
| Musical Note | Standard Frequency (Hz) | Acoustic Role |
|---|---|---|
| C4 (Middle C) | 261.63 Hz | Center of piano keyboard |
| A4 (Concert A) | 440.00 Hz | Orchestral tuning standard |
| C5 (Tenor C) | 523.25 Hz | High vocal range |
| A5 | 880.00 Hz | Upper violin range |
⚠️ Common Pitfalls to Avoid
- •Setting volume too high initially; pure high-frequency sine waves can sound surprisingly piercing.
💡 Practical Real-World Uses
- •Testing subwoofer low-frequency cutoff (20 Hz – 80 Hz).
- •Tuning musical instruments and checking audio cable buzz.
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