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EBATO // Harmonic Frequency Lab
Frequency Stack
Work from one Current Frequency. Presets replace it. Interval buttons transform it. Add only the frequencies you want to keep.
01 // Current Frequency
What you're hearing now
A440 — Standard
440.00Hz
A4
+0.0 cents
02 // Interval Changes
Full Interval Ladder: 2nd → 29th
Interval Root
440.00 Hz • current (not yet committed)
Tap any interval to load it into Current Frequency. These buttons stay available on touch/mobile even when computer hotkeys aren't available.
03 // Relative Piano
Play intervals like a keyboard
Hotkeys: four octaves • root → 29th
The piano is relative to the Interval Root. Computer hotkeys are laid out like a piano: Tab, Q, W, E… act as white keys while the number/symbol row supplies the black keys where a piano actually has them. The second half continues from Left Shift, Z, X, C…, with the A/S/F/G… row supplying the black keys. The full mapping spans four octaves from the root to the 29th. Piano notes rewrite Current Frequency; they do not add to the stack.
04 // Stack
Committed frequencies
Nothing in the stack yet. Add the Current Frequency when you hear something you want to keep.