Audio Signal Generator – Sine, Dual Tone & Sweep Generator Online
Single, dual and sweepReady
Plays two fixed tones together; set frequencies in the dual presets.
- Start quiet, raise slowly
- Check L/R markings first
- Disable audio enhancements
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Online audio frequency signal generator
Combine two oscillators or run a sweep with exact start and end points. Useful for lab checks, education and quick troubleshooting.
Sine tone generator
A sine has a single frequency and no harmonics, making it the reference for level and frequency checks.
Dual-tone generator
Two close tones beat at their difference frequency; widely spaced tones are used for intermodulation tests.
Sweep generator
Choose any start and end; the sweep is logarithmic for musical spacing.
How to Use the
Signal Generator
- 01
Set
choose frequency, level and waveform.
- 02
Play
start a sine, square or triangle; adjust frequency live while it plays.
- 03
Sweep
set start (A) and end (B) and a length.
- 04
Dual
use the dual-tone presets for beats and IMD.
Sine tone generator
A sine has a single frequency and no harmonics, making it the reference for level and frequency checks.
Dual-tone generator
Two close tones beat at their difference frequency; widely spaced tones are used for intermodulation tests.
Sweep generator
Choose any start and end; the sweep is logarithmic for musical spacing.
Accuracy
Frequencies are exact to the sample rate’s precision; level is relative to full scale, not calibrated SPL.
Related guides and fixes
Learn more in these guides: No sound on Windows, No sound on Mac, Headphones only one side, Speakers crackling, How to test speakers, How to test headphones.
Frequently Asked Questions
Q.Can I change frequency while playing?
Yes, move slider A.
Q.What is dBFS?
Decibels relative to the loudest digital level.
Q.Is a square wave louder?
Yes, at the same level it carries more energy.