Perfect intervals are the unison, fourth, fifth, and octave. They occur naturally in the major scale between scale note 1 and scale notes 1, 4, 5, and 8.
What is a perfect interval?
Perfect intervals have only one basic form. The first (also called prime or unison), fourth, fifth and eighth (or octave) are all perfect intervals. These intervals are called “perfect” most likely due to the way that these types of intervals sound and that their frequency ratios are simple whole numbers.
Why is an interval called perfect?
The term perfect identifies the perfect fifth as belonging to the group of perfect intervals (including the unison, perfect fourth and octave), so called because of their simple pitch relationships and their high degree of consonance.
How do you find the perfect interval?
Youtube quote: The key of C has these notes which contains G the upper note is in the key of the lower note. So we say this is a perfect interval a perfect fifth and notice how pure and open this interval.
What does a perfect interval sound like?
Quote from the video:
Youtube quote: Sound if physics is something that interests you you may like to know that these perfect intervals represent two pitches whose rates of sound wave vibration divided up into the cleanest fractions.
How many perfect intervals are there?
Measured as described above, the scale yields four perfect intervals: prime, or unison; octave; fourth; and fifth.
What is a perfect 4th interval?
The perfect fourth interval consists of two notes with five steps distance. For example, C to F note will result in this musical interval. The perfect fourth include one more semi-step compared to the major third (M3) and two semi-steps less compared to the perfect fifth (P5).
Can perfect intervals be major or minor?
Minor seconds, thirds, sixths, and sevenths occur naturally in the descending major scale between scale note 8 and scale notes 7, 6, 3, and 2. Perfect intervals are never major or minor. Likewise, major and minor intervals are never perfect.