## Octave |

Name | |
---|---|

Other names | - |

Abbreviation | P8 |

Size | |

12 | |

0 | |

2:1^{[1]} | |

1200^{[1]} | |

1200 | |

1200^{[1]} |

In **octave** (*octavus*: eighth) or **perfect octave** is the ^{[2]} as the unit of ^{[3]}

The most important

The interval between the first and second harmonics of the

The octave has occasionally been referred to as a ^{[4]}

To emphasize that it is one of the **P8**. The octave above or below an indicated **8 ^{a}** or

For example, if one note has a frequency of 440 ^{n} times the frequency of that note (where *n* is an integer), such as 2, 4, 8, 16, etc. and the reciprocal of that series. For example, 55 Hz and 440 Hz are one and two octaves away from 110 Hz because they are ^{1}⁄_{2} (or 2^{−1}) and 4 (or 2^{2}) times the frequency, respectively.

For Calculating the Octave Range between two given frequencies one has to simply enter :

Octave Range = log ( base 2 ) Higher Frequency / Lower Frequency

After the **octave equivalency**, the assumption that pitches one or more octaves apart are musically ^{[5]} The conceptualization of pitch as having two dimensions, pitch height (absolute frequency) and pitch class (relative position within the octave), inherently include octave circularity.^{[5]} Thus all C♯s, or all 1s (if C = 0), in any octave are part of the same

Octave equivalency is a part of most "advanced musical cultures", but is far from universal in "primitive" and ^{[6]}^{[7]}
The languages in which the oldest extant written documents on tuning are written, ^{[8]}
Leon Crickmore recently proposed that "The octave may not have been thought of as a unit in its own right, but rather by analogy like the first day of a new seven-day week".^{[9]}

Monkeys experience octave equivalency, and its biological basis apparently is an octave mapping of neurons in the auditory ^{[10]} Studies have also shown the perception of octave equivalence in rats (Blackwell & Schlosberg 1943), human infants (Demany & Armand 1984),^{[11]} and musicians (Allen 1967) but not starlings (Cynx 1993), 4–9 year old children (Sergeant 1983), or nonmusicians (Allen 1967).^{[5]}

While octaves commonly refer to the **perfect octave** (P8), the interval of an octave in music theory encompasses chromatic alterations within the pitch class, meaning that G♮ to G♯ (13 semitones higher) is an

Other Languages

العربية: جواب (موسيقى)

беларуская: Актава

беларуская (тарашкевіца): Актава

български: Октава

català: Octava (música)

čeština: Oktáva (hudba)

dansk: Oktav

Deutsch: Oktave

eesti: Oktav

Ελληνικά: Οκτάβα

español: Octava

Esperanto: Okto

فارسی: اکتاو

français: Octave (musique)

Frysk: Oktaaf

galego: Oitava

한국어: 옥타브

հայերեն: Օկտավա

hrvatski: Oktava

Ido: Oktavo

Bahasa Indonesia: Oktaf

íslenska: Áttund

italiano: Ottava (musica)

עברית: אוקטבה

ქართული: ოქტავა

latviešu: Oktāva

lietuvių: Oktava

magyar: Oktáv

Bahasa Melayu: Oktaf

Nederlands: Octaaf (muziek)

日本語: オクターヴ

norsk: Oktav

norsk nynorsk: Oktav

occitan: Octava (solfegi)

oʻzbekcha/ўзбекча: Oktava

polski: Oktawa (interwał)

português: Oitava

română: Octavă

русский: Октава

Simple English: Octave

slovenčina: Hlasová oktáva

کوردی: ئۆکتەیڤ

српски / srpski: Октава (музика)

srpskohrvatski / српскохрватски: Oktava

suomi: Oktaavi

svenska: Oktav

ไทย: อ็อกเทฟ

Türkçe: Oktav

українська: Октава

Tiếng Việt: Quãng tám

中文: 八度