Build an Interval Intonation Test

Musical Interval Width Perception

Use this form to set the attributes for your test. Suggestion: start with the 'Unison' interval and large cents differences, and work your way up to the more challenging scenarios. Press the Create-and-Launch-Test button at the bottom of the form when you are ready to start the test. You will be presented with multiple rounds, and once the test is completed, your results will be shown.

**Set the attributes for the test**
Attribute	Value
Interval size Unisons (two notes of the same pitch) are the most reliable for judging pitch differences, and most often used when tuning an instrument. Judging the intonation of intervals is more challenging, and an ongoing aspect of ensemble performance. The intervals offered here are either equally tempered, or have perfect integer ratios.	Unison Octave (2:1 ratio) Fifth (equally tempered = 700 cents) Fifth (perfect 3:2 ratio = 702 cents) Major Third (equally tempered = 400 cents) Major Third (perfect 5:4 ratio = 386 cents)
Interval direction Paired notes (playing at the same time) are often easier to judge as to whether they are in tune or not, than notes played in sequence, but discerning if the interval is wide or narrow can be a greater challenge. For unisons, the orders 'ascending' and 'descending' amount to the same thing.	Paired notes Ascending Series Descending Series
Timbre Investigate if the harmonic content affects pitch judgment. Simple = single sine wave, no overtones Sawtooth = full set of overtones Square = odd-numbered overtones Formant = overtones stronger than fundamental	First Tone Simple Sawtooth Square Formant	Second Tone Simple Sawtooth Square Formant
Lastly, pick a test from either of the two sets below:
Fixed-size tests (6 questions) Each round will present tones that are either off (by the specified amount) or good. This test is best for selecting a difficulty level that matches your discrimination ability.	Easiest (50 cents) Middling (40 cents) Harder (30 cents) Hardest (20 cents) Boss (10 cents)
Range-covering tests (10 questions) Tests will span the range of specified cents, with some test having very low differences. Best for observing the point where the difference becomes difficult to judge.	Tough (12 cent increments: ranging from -48 to 48) Tougher (8 cent increments: ranging from -32 to 32) Toughest (5 cent increments: ranging from -20 to 20)