Share the same pool of names as variables. Letters, digits and underscores, not starting with a digit. In its simplest form, the definition of a function named nameĪ valid function name is like a valid variable name: a sequence of
So Sophi is right, with seven notes the eighth one would be an octave away? Anyway, use of these "heptatonic" scales is very common, which relates to why an interval over which the frequency is doubled/halved is called an octave. """These notes may have some notable harmonic properties. Dishwasher motor burned up, washiing machine door froze up, and microwave put on a pyrotechnic display complete with yellow belching flames. Had a rough week recently, a "revolt of the machines'. In between carburetors and household maintenance, that is. Now that i'm retired have more time for such adventures. It helps cement in a feeling for what the originators were thinking. I always like to look up etymology of terms. "when the student is ready a teacher will appear"
So i put out what i'd read, figuring i'd likely get enlightened further by somebody with knowledge of music science. I think math of vibrating strings (frequency) wasn't figured out until Newton's time but i could be wrong. That's why i googled 'octave entymology', to see why an 'octave' isn't instead called a doubling or a twelv-ing, and found to my surprise it goes back to Latin and days of the week. I do understand that we use twelfth root of two as ratio between adjacent notes(?right term?) in Bach's even tempered scale so i figured maybe there's twelve intervals - i dont know. ""Doesn't "octave" (in music) just relate to the eight intervals in a normal scale, before it repeats? "" So doubtless the notes were recognized as being an iterative, repeating pattern long before the advent of frequency counters.ĭoesn't "octave" (in music) just relate to the eight intervals in a normal scale, before it repeats?ĭecade,on the other hand, relates to a ratio of ten. Yesterday's epiphany was 65 Chevy carburetor idle circuit. Thanks guys, i learned something - and that's my daily goal. So, in our context an octave is a frequency ratio of 2 or 1/2 not eight like the name implies.Ħdb/octave is 20db/decade - i remember a test question(over forty years ago) was to prove that.īut it's the order of the filter that sets the slope. So doubtless musical notes were recognized as being an iterative, repeating pattern long before the advent of frequency counters. There's something in our hearing neurology that attunes us to harmonics in sound It was also interesting to google "octave define" So the root thought is same location in next iteration of a repeating pattern (hangovers lasted that long back then?)Įighth day after is same day of following week Middle Latin, eighth day after a festival. It was interesting to google "octave etymology" "can we step back and have someone clearly define an "octave"? "