CAST · EAR · interval training · sine + warm timbre
Ear.
Hear two notes. Name the interval between them. Three levels of difficulty, ascending or descending or both. Streak tracker so you can come back tomorrow and see if you've gotten better.
LEVEL
DIRECTION
TIMBRE
STREAK0
BEST STREAK0
TOTAL0 / 0correct / asked
% CORRECT—
How it's made
Each interval plays as two notes: 0.9 seconds for the first, 0.1 second gap, 1.4 seconds for the second with a soft release. Root pitch is randomized between C3 and C5 each round so you can't get used to a single starting note.
The "warm" timbre is a fundamental sine plus two detuned partials at +7 and −5 cents at lower gain — same trick a chorus pedal uses. "Pure sine" is one sine wave. "Organ" stacks an octave + a fifth above the fundamental at lower gains for a Hammond-ish flavor without leslie modulation.
Levels are cumulative: starter is six (m2, M2, M3, P4, P5, P8) — the most recognizable. Mid adds m3, M6, m7. All adds m6, tritone, M7.
