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| ==Etymology== | | ==Etymology== |
| [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French, from Medieval Latin octava, from [[Latin]], feminine of octavus eighth, from octo eight | | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French, from Medieval Latin octava, from [[Latin]], feminine of octavus eighth, from octo eight |
− | *Date: [http://www.wikipedia.org/wiki/14th_Century 14th century] | + | *Date: [https://www.wikipedia.org/wiki/14th_Century 14th century] |
| ==Definitions== | | ==Definitions== |
| *1 : an 8-day period of [[observances]] beginning with a festival day | | *1 : an 8-day period of [[observances]] beginning with a festival day |
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| *5 : a [[group]] of eight | | *5 : a [[group]] of eight |
| ==Description== | | ==Description== |
− | In [[music]], an '''octave''' is the [http://en.wikipedia.org/wiki/Interval_(music) interval] between one musical [[pitch]] and another with half or double its [[frequency]]. The octave [[relationship]] is a [[natural]] [[phenomenon]] which has been referred to as the "basic [[miracle]] of [[music]]," the use of which is "common in most musical [[systems]]." It may be derived from the [http://en.wikipedia.org/wiki/Harmonic_series_(music) harmonic series] as the interval between the first and second harmonics. | + | In [[music]], an '''octave''' is the [https://en.wikipedia.org/wiki/Interval_(music) interval] between one musical [[pitch]] and another with half or double its [[frequency]]. The octave [[relationship]] is a [[natural]] [[phenomenon]] which has been referred to as the "basic [[miracle]] of [[music]]," the use of which is "common in most musical [[systems]]." It may be derived from the [https://en.wikipedia.org/wiki/Harmonic_series_(music) harmonic series] as the interval between the first and second harmonics. |
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| The octave is occasionally referred to as a diapason.[2] | | The octave is occasionally referred to as a diapason.[2] |
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− | The octave above an indicated [[note]] is sometimes abbreviated 8va, and the octave below 8vb. To emphasize that it is one of the perfect intervals, the octave is sometimes designated P8; the other [http://en.wikipedia.org/wiki/Perfect_interval perfect intervals], the unison, [http://en.wikipedia.org/wiki/Perfect_fourth perfect fourth], and [http://en.wikipedia.org/wiki/Perfect_fifth perfect fifth], are designated PU, P4, and P5.[http://en.wikipedia.org/wiki/Octave] | + | The octave above an indicated [[note]] is sometimes abbreviated 8va, and the octave below 8vb. To emphasize that it is one of the perfect intervals, the octave is sometimes designated P8; the other [https://en.wikipedia.org/wiki/Perfect_interval perfect intervals], the unison, [https://en.wikipedia.org/wiki/Perfect_fourth perfect fourth], and [https://en.wikipedia.org/wiki/Perfect_fifth perfect fifth], are designated PU, P4, and P5.[https://en.wikipedia.org/wiki/Octave] |
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| [[Category: Music]] | | [[Category: Music]] |