Reference tone
Play a reference note or a chosen frequency with live pitch and volume adjustments. Files and entered content are not sent to or stored on a server.
How to use
Play a reference note or a chosen frequency with live pitch and volume adjustments.
Supported formats & limits
Values → Result
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Supports 20–20,000 Hz. Note buttons use A4 = 440 Hz.
Reference tone User guide
Instructions
- Choose octave and note, or type a frequency.
- Set a low volume and play.
- Change note / volume while playing, then stop.
Example
Input / settings
A4
Result / checks
440 Hz reference tone
Please note
- Supports 20–20,000 Hz. Note buttons use A4 = 440 Hz.
- This plays a tone; it does not listen to or tune your instrument through a microphone.