About the 60 Hz tone
60 Hz is the mains frequency in North America and parts of South America and Asia, and the source of the classic electrical hum. If a buzz in your audio matches this tone (or 120 Hz, its first harmonic), it's probably a grounding or cable issue.
A 60 Hz sine wave completes 60 cycles every second; each cycle lasts 16.667 ms, and the sound wave is about 571.7 cm long in air. The nearest musical note is B1.
Start with the volume low and raise it slowly. Use the slider to move away from 60 Hz, or try another preset: 20 Hz · 40 Hz · 50 Hz · 100 Hz · 256 Hz · 432 Hz · 440 Hz · 528 Hz · 1,000 Hz · 8,000 Hz · 15,000 Hz · 17,400 Hz · 20,000 Hz.
Questions
How do I play a 60 Hz tone?
Press Play above. The generator starts at exactly 60 Hz as a pure sine wave; you can change the wave shape and volume.
Why can't I hear 60 Hz?
Your speakers or headphones may not reproduce it, the volume may be too low, or it may be outside your hearing range. Very low and very high tones are the hardest.
Is it safe to listen to test tones?
At a comfortable volume, yes. Start quiet, and stop if anything feels uncomfortable.
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