Octave
In music, an octave (Latin: octavus: eighth) or perfect octave (sometimes called the diapason) is an interval between two notes, one having twice the frequency of vibration of the other. The octave relationship is a natural phenomenon that has been referred to as the "basic miracle of music", the use of which is "common in most musical systems". The interval between the first and second harmonics of the harmonic series is an octave.
Extends: Octaves, [Perfect intervals](https://wikipedia.org.ai/Perfect intervals), [Superparticular intervals](https://wikipedia.org.ai/Superparticular intervals), [Musical notes](https://wikipedia.org.ai/Musical notes), [Units of level](https://wikipedia.org.ai/Units of level)
Properties
| Property | Expected Type | Description |
|---|---|---|
| [Main Interval Name](https://wikipedia.org.ai/Main Interval Name) | Text | Perfect octave |
| Inverse | Text | unison |
| Complement | Text | octave |
| [Other Names](https://wikipedia.org.ai/Other Names) | Text | - |
| Abbreviation | Text | P8 |
| Semitones | Text | 12 |
| [Interval Class](https://wikipedia.org.ai/Interval Class) | Text | 0 |
| [Just Interval](https://wikipedia.org.ai/Just Interval) | Text | 2:1 |
| [Cents Equal Temperament](https://wikipedia.org.ai/Cents Equal Temperament) | Text | 1200 |
| [Cents Just Intonation](https://wikipedia.org.ai/Cents Just Intonation) | Text | 1200 |