Tone, Noise, Metronome & Binaural Generator
Generate test tones, noise, click tracks and binaural beats at any frequency, BPM and duration. Useful for sleep, drumming practice, focus, audio testing and brainwave entrainment.
Generator
440 Hz = A4 tuning reference. 1 kHz is a common test tone.
Up to 1 hour per render.
About this audio generator
Four generators in one tool. Tone produces clean sine, square, saw or triangle waves at any frequency — useful for tuning instruments, testing speakers, or generating reference signals. Noise produces white, pink or brown noise — useful for sleep, masking sound and audio engineering. Metronome generates a click track at any BPM — useful for drum practice, recording and live performance. Binaural produces a stereo two-tone signal where each ear gets a slightly different sine — your brain perceives the difference as a low-frequency beat.
All four render instantly with no upload required.
How to use the audio generator
- 01
Pick a generator
Tone, noise, metronome or binaural.
- 02
Set the parameters
Frequency, BPM, colour, waveform, carrier + beat — depending on the generator.
- 03
Render and download
Output is a clean WAV file at the requested duration.
Why use this generator
- Tone generator: sine / square / saw / triangle, 20 Hz – 20 kHz
- Noise generator: white, pink or brown
- Metronome: any BPM with adjustable click tone
- Binaural beats: carrier + beat freq with delta/theta/alpha/beta/gamma presets
- Output is a clean 16-bit WAV file
- 100% private — runs locally in the browser
Generator FAQ
What's the difference between white, pink and brown noise?
White noise has equal energy across all frequencies (sounds bright, hissy). Pink noise has less energy at higher frequencies (sounds more natural, like a waterfall). Brown noise drops off even faster (sounds like ocean / deep rumble).
What's a 440 Hz tone good for?
440 Hz is the modern A4 tuning reference — instrumentalists tune to it. Use the Tone generator at 440 Hz / sine / 5 seconds for a quick tuning reference.
Do binaural beats actually do anything?
There's a small body of research suggesting modest effects on relaxation and focus when the listener is wearing headphones. The science is contested and effects are not dramatic. Treat the brainwave presets as suggestions, not prescriptions — and use headphones, since binaural beats only work when each ear hears its tone independently.
Can I record over the metronome?
Not in this tool — for recording, use the Audio Recorder. This tool just generates the click track for you to play back during practice.
Will the output clip?
No — generators output at -6 dBFS by default with plenty of headroom. Tones, noise and binaural beats are at safe listening levels.
More master & tools tools
Loudness, tags, inspect, generate