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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?
Why are there twelve notes in an octave? - Music: Practice Theory . . . It makes me wonder if the 12-semitone octave sounded good before the advent of "music as we know it" or if it is something of an acquired taste, in which case alternative breakdowns of the octave could be adapted to, like in the case of western vs indian vs east asian music
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
Is 16va proper notation? - Music: Practice Theory Stack Exchange The basis of both the frequency and the cents measurement is a 2:1 octave relationship Because pitch measurement systems (linear and logarithmic) are derived from the octave as 2:1, a double octave represented as 16va (16:8 = 2:1) is a notation evolution surpassing music theory symbols based on an outdated, extended modal scale series, like 15ma
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
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