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The notation 8 a or 8 va is sometimes seen in sheet music, meaning "play this an octave higher than written" (all' ottava: "at the octave" or all' 8 va). 8 a or 8 va stands for ottava, the Italian word for octave (or "eighth"); the octave above may be specified as ottava alta or ottava sopra). Sometimes 8 va is used to tell the musician to play ...
An octave band is a frequency band that spans one octave (Play ⓘ).In this context an octave can be a factor of 2 [1] [full citation needed] or a factor of 10 0.301. [2] [full citation needed] [3] [full citation needed] An octave of 1200 cents in musical pitch (a logarithmic unit) corresponds to a frequency ratio of 2 / 1 ≈ 10 0.301.
Example of the same two notes expressed regularly, in an 8 va bracket, and in a 15 ma bracket. As the fifteenth is a multiple of octaves, the human ear tends to hear both notes as being essentially "the same", as it does the octave.
In music, an octave. Particularly in the following musical instructions: All' ottava alta (8va, also ottava sopra), transpose music up one octave; All' ottava bassa (8vb, also ottava sotta), transpose music down one octave; Coll' ottava, double at the octave
Octave 0 of SPN marks the low end of what humans can actually perceive, with the average person being able to hear frequencies no lower than 20 Hz as pitches. The octave number increases by 1 upon an ascension from B to C. Thus, A 0 refers to the first A above C 0 and middle C (the one-line octave's C or simply c′) is denoted as C 4 in SPN.
Some scales span part of an octave; several such short scales are typically combined to form a scale spanning a full octave or more, and usually called with a third name of its own. The Turkish and Middle Eastern music has around a dozen such basic short scales that are combined to form hundreds of full-octave spanning scales.
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The base-10 logarithm of 2 is equal to approximately 0.301, which Sauveur multiplies by 1000 to obtain 301 units in the octave. In order to work on more manageable units, he suggests to take 7/301 to obtain units of 1/43 octave. [b] The octave therefore is divided in 43 parts, named "merides", themselves divided in 7 parts, the "heptamerides ...