Musical intervals
physical quantity; ratio between two sonic frequencies, often measured in cents, a unit derived from the logarithm of the frequency ratio
The gallery of intervals' pictures:
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Perfect unison -
Minor 2nd -
Major 2nd -
Minor 3rd -
Major 3rd -
Perfect 4th -
Tritone -
Perfect 5th -
Minor 6th -
Major 6th -
Minor 7th -
Major 7th -
Perfect octave -
Minor 9th -
Major 9th -
Minor 10th -
Major 10th -
Perfect 11th -
Perfect 12th -
Minor 13th -
Major 13th -
Minor 14th -
Major 14th -
Perfect 15th
