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There are 12 notes in an Octave,so why call it an octave?

Posted by ohdearme 
There are 12 notes in an Octave,so why call it an octave?
April 22, 2019 09:37PM
Hello all, Hope you enjoyed Easter.

As there are twelve notes in an octave, not eight, why do we call it an Octave? What also makes me scratch my head is that if we do consider the
white notes only, there are really only seven as completing the usual way we play a scale is to play the tonic twice.

Sort me out somebody please.

Alan
Re: There are 12 notes in an Octave,so why call it an octave?
April 29, 2019 03:46AM
ANYBODY?
Regards
Re: There are 12 notes in an Octave,so why call it an octave?
May 01, 2019 03:32AM
not really a reply - just to say your question has long stumped me as well

the eight notes of the octave appear to be the eight notes of the major scale starting and ending with C

as to how the 'octave' was then transformed to cover the 12 half-tones is a mystery to me
Viz
Re: There are 12 notes in an Octave,so why call it an octave?
May 01, 2019 07:10PM
Well, it’s simply because it’s the word that was invented to describe the 7+1 notes of the major scale, where the top note has double the frequency of the bottom note. You could use the word tredective to describe the 12+1 notes of the chromatic scale but there’s no need because octave’s definition has morphed from specific to general to mean doubling the frequency, regardless of how many notes there are.

You can say diapason if it annoys you.
Re: There are 12 notes in an Octave,so why call it an octave?
May 03, 2019 01:42AM
Hello and good morning

Lots of things annoy me Viz but I am doing that on thousands of other forums. Joke.

Thanks for your comments have a good bank holiday everyone.

Best

Alan
Viz
Re: There are 12 notes in an Octave,so why call it an octave?
May 03, 2019 12:54PM
:))

And you
Re: There are 12 notes in an Octave,so why call it an octave?
May 04, 2019 10:00AM
Was thinking, why can't we come up with a new term to describe the twelve natural sounds contained in the current 'octave'.

How about 'douzelle' ?

Maybe someone can find a better term, with no apparent conflict or contradiction.
Viz
Re: There are 12 notes in an Octave,so why call it an octave?
May 06, 2019 12:41AM
Tredective for the interval and 12-tone or chromatic for the scale?
ttw
Re: There are 12 notes in an Octave,so why call it an octave?
May 11, 2019 05:40AM
It's historical. Mostly from descriptions of Greek music theory. The early theorists call a note with double the frequency of a given note an "octave," no matter how many notes were considered in between.
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