Are octaves, fifths, fourths and thirds considered as

Median consonance: fourths and fifths. ... — "So it appears that there are six species of consonances, that is: unison, octave, fifth, fourth, minor third, major third." The last two appear as imperfect consonances by elimination.) Imperfect dissonance: major sixth (tone + fifth) and minor seventh (minor third + fifth).

1. What is fifths and octaves?
2. Why do octaves and fifths sound consonant?
3. What is the name given to describe an octave fifth and fourth?
4. What is the ratio for octave?

What is fifths and octaves?

So-called hidden consecutives, also called direct or covered octaves or fifths, occur when two independent parts approach a single perfect fifth or octave by similar motion instead of oblique or contrary motion. A single fifth or octave approached this way is sometimes called an exposed fifth or exposed octave.

Why do octaves and fifths sound consonant?

The octave, fifth, and fourth are the intervals which have been considered to be consonant throughout history by essentially all cultures, so they form a logical base for the building up of musical scales. A typical strategy for using these univerally consonant intervals is the circle of fifths.

What is the name given to describe an octave fifth and fourth?

The consonant intervals are considered the perfect unison, octave, fifth, fourth and major and minor third and sixth, and their compound forms. An interval is referred to as “perfect” when the harmonic relationship is found in the natural overtone series (namely, the unison 1:1, octave 2:1, fifth 3:2, and fourth 4:3).

What is the ratio for octave?

Pitch Ratios