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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).
GNU Octave is a scientific programming language for scientific computing and numerical computation.Octave helps in solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with MATLAB.
Scales are typically listed from low to high pitch. Most scales are octave-repeating, meaning their pattern of notes is the same in every octave (the Bohlen–Pierce scale is one exception). An octave-repeating scale can be represented as a circular arrangement of pitch classes, ordered by increasing (or decreasing) pitch class.
Augmented octave on C. Play ⓘ In Western tonal music theory, an augmented octave is the sum of a perfect octave and an augmented unison or chromatic semitone. It is the interval between two notes, with the same note letter on staff positions an octave apart, whose alterations cause them, in ordinary equal temperament, to be thirteen semitones apart.
A jump from the lowest semitone to the highest semitone in one octave doubles the frequency (for example, the fifth A is 440 Hz and the sixth A is 880 Hz). The frequency of a pitch is derived by multiplying (ascending) or dividing (descending) the frequency of the previous pitch by the twelfth root of two (approximately 1.059463).
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.
Sometimes written with “8v” below the treble, to represent the octave (8 tones in a major scale). Tenor C is an organ builder's term for small C or C 3 (130.813 Hz), the note one octave below middle C. In older stoplists it usually means that a rank was not yet full compass, omitting the bottom octave, until that octave was added later on.
Five and one half steps down from Drop D, or one half step up from Drop D1. This can also be a Drop D# standard octave variant tuning modeled on an 8 string D#-G#-d#-g#-C#-F#-A#-d#. Gravemind uses an altered version of Drop D# (which is a 6-string Drop A# with the low D#) on their album Conduit.