Audio Generator
Online Tone
Generator
Generate pure audio tones, binaural beats, and frequency sweeps directly in your browser. Perfect for hearing tests, meditation, audio calibration, and tinnitus relief.
Runs locally
Web Audio API
WAV export
No signup
Live Waveform
440 Hz
Frequency
Sine
Waveform
A4
Note
Frequency
Hz
20 Hz1 kHz5 kHz10 kHz20 kHz
Waveform
Volume
30%
Pan
Center
Duration
∞ Continuous
Musical Note
A4
+0 cents
Waveform
Ready to play
Press play to start the tone
Preset Frequencies
How binaural beats work: Two slightly different frequencies are played separately in each ear. Your brain perceives the difference as a rhythmic pulse — the "beat". Use headphones for best effect.
Left Ear Frequency200 Hz
Right Ear Frequency210 Hz
Volume30%
Beat Frequency
10 Hz
Alpha Wave
Binaural Beat Presets
Ready — use headphones
Binaural beats require stereo headphones to be effective
Start Frequency20 Hz
End Frequency20000 Hz
Duration10 s
Volume30%
Sweep Type
Direction
Ready — will sweep from 20 Hz to 20 kHz
Useful for hearing range testing and speaker/headphone evaluation
Why use this tone generator?
Hearing Tests
Check your hearing range from 20 Hz to 20 kHz. Useful for detecting age-related hearing loss.
Binaural Beats
Generate alpha, theta, delta, and gamma binaural beats for relaxation, focus, and meditation.
Speaker Calibration
Test speakers and headphones across the full audio spectrum with sweep tones.
WAV Export
Export any tone as a high-quality .wav file for use in DAWs, videos, or audio projects.
Frequently Asked Questions
What are binaural beats?
Binaural beats occur when two slightly different frequencies are played in each ear. The brain perceives the difference as a rhythmic beat. For example, 200 Hz in the left ear and 210 Hz in the right creates a 10 Hz alpha beat.
What is 528 Hz used for?
528 Hz is part of the ancient Solfeggio scale and is popularly associated with healing and transformation. While scientific evidence is limited, many people use it for meditation and relaxation purposes.
What is the difference between 432 Hz and 440 Hz?
Standard concert pitch uses A4 = 440 Hz. Some musicians and listeners prefer A4 = 432 Hz, claiming it sounds warmer or more natural. You can test both here and decide for yourself.
How do I test my hearing range?
Use the Frequency Sweep mode starting at 20 Hz and going up to 20 kHz. Note the highest frequency you can still hear. Younger people typically hear up to 20 kHz, while older adults may only hear up to 14–16 kHz.