The A440 Tuning Reference

Level

Reference

Sine Cents

Start

 

Tone

Sine with

 

 

 

Harmonics

 

A440 Tuning Reference

Level

Use your mouse to select an output level ranging from off to 0 dB.

Reference Tone

The A440 is the accepted standard tuning reference. It’s handy to have access to this reference tone to quickly compare an instrument tuning to an A440 reference.

Wave Select

This offers two separate waveforms that can be used as the tuning source tone. The squiggly line is a sine wave with three harmonics, and the sine wave symbol is a pure sine wave tone.

Cents

A frequency range can be fine-tuned to zero on a reference tone by adjusting from 415 Hz (100 cents) to 462 Hz (+100 cents).

Note: A cent is a unit of a pitch interval equivalent to 1/100th of the semi-tone.

Start

Left-click to start the tuning reference, press it again to stop. Right-click to play a momentary tone burst for as long as you hold down the button.

User’s Guide