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What is an octave? - Music: Practice Theory Stack Exchange An octave is simply an interval created by the use of the factor 2 instead - e g if we started with our 100Hz note again, and we wanted to go up an octave, we would double the frequency, taking us to 200Hz If we wanted to go down an octave, we'd halve it, taking us to 50Hz Why is this factor of 2 so special?
tuning - Was the term octave coined after the development of early . . . Was the term “octave” coined after the development of early music theory? No As shown below, it was already in use by the 11th century to denote the musical interval (although the principal name for the interval at that time seems still to have been diapason) What system was in use in medieval Europe when the term octave arose, and what did the term octave refer to? I'm a little hazy on
Simple way to add an additional octave in Musescore? Click first note and Shift + Click last note of desired selection, rests at the end of the selection don't need to be in there because they won't be affected by the octave change Ctrl + Down arrow, This lowers the existing music by an octave, so you get your lower octave for free But now you need back the upper octave Alt + 8, This adds an octave interval above the notes in the selection
Why do octaves sound equivalent? - Music: Practice Theory Stack Exchange @CarlWitthoft: Octave equivalence isn't the statement that notes separated by an octave sound the same If I play 1000 Hz followed immediately by 2000 Hz, all humans can tell that there was a big change in pitch Octave equivalence says that these two pitches are perceptually similar in a variety of ways Depending on context, they can be easily confused with one another Across all musical
theory - When was the word octave first used? - Music: Practice . . . So who first used the word "octave" in the modern music-theoretical sense, and, more importantly, when? By "the word 'octave'" I mean any word in any language that relates to the number eight, though I expect that it will most likely be the Latin word octava or some variant thereof
Ottava markings - Should this 8va be 8vb? - Music: Practice Theory . . . 8va is an abbreviation for "ottava" ("octave" in Italian) and is commonly used both for higher and lower octave shifts The key difference is the placement of the dashed line: aligned to the top for "octave higher" and aligned to the bottom for "octave lower" 8vb is also sometimes used to indicate an octave lower
Why do clef octave changes use 8 and 15? [duplicate] Here, there's a series of octave clefs listed as using 8 and 15 to alter the clef by one or two octaves respectively My understanding of music theory is that there are 12 notes in an octave, and only 7 whole notes in a typical scale
Why is a doubling of frequency called an octave? There are many longer answers here on this topic But the gist is that like the octave (frequency ratio 2:1), small whole-number ratios of frequencies are often heard as "consonant " So the ratio 3:2 between frequencies sounds good (and, as noted, creates an interval called a perfect fifth), as well as the ratio 4:3 (the so-called perfect fourth)
terminology - What exactly constitutes Unison? - Music: Practice . . . In most contexts, "unison" means "the same pitch in the same octave " However, as Laurence notes, doubling in octaves is often described as "unison," particularly if a soprano or alto (or several) is singing an octave above a tenor or bass (or several)