Generate precise tones, dual tones, frequency sweeps, white/pink/brown noise and DTMF signals with safe live preview and repeatable 16/24-bit WAV export up to 96 kHz — completely free.
5 signal modesTone, dual, sweep, noise and DTMF.
Engineering controlsdBFS level, pan, waveform, sample rate and bit depth.
Exact WAV exportSample-by-sample synthesis with click-safe edges.
−24 dBFS
Center
Ready. Preview starts quietly at −24 dBFS.
Hearing/equipment safety: start with low playback volume. Do not use loud test tones as a substitute for professional hearing assessment or calibration equipment.
Signal preview1,000 Hz · sine
Reference note1,000 Hz is approximately B5 +21 cents in A4=440 equal temperament.
Rendered WAV
Repeatable signal design. Tone and sweep synthesis is calculated sample-by-sample for export. White noise uses cryptographic random seeds where available; pink and brown noise are filtered from the same generated noise stream.
Five generators in one
Create a calibrated single tone, dual tone, frequency sweep, white/pink/brown noise, or DTMF signal. Live preview and WAV export use the same settings so the downloaded signal matches what you designed.
Safe-by-default monitoring
Preview level starts at −24 dBFS and every rendered signal receives a short fade to reduce clicks. Keep speaker/headphone volume low, especially with high frequencies or long tests.
Engineering-ready export
Choose 44.1, 48 or 96 kHz and 16/24-bit PCM. Export includes calculated peak level, sample count, SHA-256 and the exact generator settings for repeatability.