Tone Generator
Supports Tone, Sweep, and Noise modes with multiple waveforms, 20Hz-20kHz adjustment, and visualizer.
🔊 Online Frequency Generator
Visualizer
Play
20Hz1kHz20kHz
50%
0%50%100%
Center
LeftCenterRight
⚠️ Please be careful with volume to avoid hearing or equipment damage.
About This Tool
A professional online audio tone generator. Powered by Web Audio API, it supports three modes: Tone (stable frequency), Sweep (automatic frequency scan), and Noise (White, Pink, Brown). Generates Sine, Square, Sawtooth, and Triangle waves with frequency range from 20Hz to 20000Hz. Features volume control, left/right channel balance, and real-time waveform visualization. Whether for testing speakers/headphones, tuning instruments, or acoustic physics experiments, it is your handy tool. Runs locally, no software installation required.
Features
- 🎵 Three Modes: Tone, Sweep (auto frequency scan), Noise (White/Pink/Brown)
- 🌊 Multiple Waveforms: Supports Sine, Square, Sawtooth, and Triangle waves
- 🎛️ Wide Range: Continuous frequency adjustment from 20Hz to 20kHz
- 📊 Visualizer: Real-time waveform display for intuitive signal visualization
- 🔊 Volume Control: 0-100% stepless volume adjustment
- ⚖️ Channel Balance: Left/Right balance control for stereo testing
- 🎯 Frequency Presets: Quick access buttons for 60Hz, 440Hz, 1kHz, 5kHz, 10kHz
- ✨ Smooth Transition: 0.1s attack/release for comfortable listening experience
- ⚡ Real-time: Instant response to parameter changes
- 🔒 Local Run: Based on Web Audio API, works offline