Intervals

A perfect octave is the interval between two pitches whose frequencies have a 2:1 ratio. It is classified as a perfect interval in Western music theory and is considered the most consonant interval after the unison.

The tritone is a musical interval spanning three whole tones, equivalent to an augmented fourth or diminished fifth. It is known for its dissonant sound and has played a pivotal role in Western harmony, theory, and composition.