Private, browser-local utility
Interval Ear Trainer
Practice recognizing ascending and descending musical intervals with local Web Audio and session-only scoring.
Playback uses two 550 ms sine tones separated by 200 ms at conservative gain. Audio begins only when you press Play.
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Session privacy
Answers, accuracy, and streak remain only in this tab. They are not stored or transmitted.
Training method
V1 covers unison through octave: minor, major, perfect, and tritone intervals. Frequencies use A4 = 440 Hz and equal temperament: 440 × 2(MIDI−69)/12. Notes stay within MIDI 48–84. This is music practice, not a hearing assessment.