How to Use the Audio Frequency & Pure Tone Wave Generator
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1
Select waveform: Sine (pure tone), Square (rich odd harmonics), Triangle, or Sawtooth.
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2
Enter or slide target frequency (e.g. 440 Hz for concert Pitch A, 60 Hz for sub-bass, 10,000 Hz for treble).
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3
Click "Start Tone" to listen and observe the live oscilloscope waveform.
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4
Use the Frequency Sweep slider to test room acoustics or speaker frequency response.
Practical Example & Use Case
Common Real-World Scenario
Tuning musical instruments to A440, testing subwoofer low-end extension (20 Hz - 80 Hz), or conducting personal high-frequency hearing tests.
Technical Notes & Limitations
Browser Engine Architecture
Human hearing spans roughly 20 Hz to 20,000 Hz. Keep speaker volume modest when testing ultra-high or low frequencies to protect ears and hardware.
Frequently Asked Questions
What is 440 Hz?
440 Hz is the standard orchestral tuning pitch (Concert A above middle C) adopted worldwide.