GreatTones

Sound

Reference pitch

Frequency of A₄ in hertz (default 424). Every note is tuned relative to this pitch.

Keyboard

Piano width in white keys (always at least one full octave). Use the slider under the keyboard to choose which note sits lowest. Pitch pipe arranges the 12 notes in a ring.

Analysis

Displays the highest common sub-harmonic of the sounding notes — the “phantom” root a just-tuned (barbershop) chord rings on. Needs at least two audible notes.

Playing

Off (Sustain): tap a note to latch it on, tap again to stop. On (Hold): a note sounds only while you hold it. In the list below, tap a note to mute it, press-and-hold to remove it.