How to Use the Audio Frequency & Tone Generator
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1
Enter a frequency in Hz (e.g. 440 for concert A).
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2
Select the waveform type: Sine, Square, Sawtooth, or Triangle.
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3
Adjust volume and click Play to generate the tone.
Practical Example & Use Case
Common Real-World Scenario
Testing hearing at 8000 Hz or calibrating studio monitor speakers to a 1 kHz reference tone.
Technical Notes & Limitations
Browser Engine Architecture
Frequency range is limited to 1 Hz – 20 kHz. Actual output depends on your speaker/headphone frequency response.
Frequently Asked Questions
What is 440 Hz?
440 Hz is Concert A (A4) — the international tuning standard used for instrument tuning.
What are binaural beats?
When slightly different frequencies play in each ear, the brain perceives a phantom beat at the difference frequency.