EFD: Difference between revisions
Cmloegcmluin (talk | contribs) No edit summary |
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n-EFDp: n equal frequency divisions of interval p | n-EFDp: n equal frequency divisions of interval p | ||
7EFDπ is dividing the frequency space between 1 and π by 7, so that makes each step (π-1)/7. So the 2nd step is 1+(π-1)/7 = 7/7+(π-1)/7 = (π+6)/7, the 3rd step would be 1+2(π-1)/7 = (2π+5)/7, then I see the pattern forming so it goes (3π+4)/7, (4π+3)/7, (5π+2)/7, (6π+1)/7, and (7π+0)/7 = π at the end. | 7EFDπ is dividing the frequency space between 1 and π by 7, so that makes each step (π-1)/7. So the 2nd step is 1+(π-1)/7 = 7/7+(π-1)/7 = (π+6)/7, the 3rd step would be 1+2(π-1)/7 = (2π+5)/7, then I see the pattern forming so it goes (3π+4)/7, (4π+3)/7, (5π+2)/7, (6π+1)/7, and (7π+0)/7 = π at the end. | ||
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! 3 | ! 3 | ||
! 4 | ! 4 | ||
! 5 | ! (5) | ||
|- | |- | ||
! frequency | ! frequency (f) | ||
|1 | |1 | ||
|1.15 | |1.15 | ||
|1.31 | |1.31 | ||
|1.46 | |1.46 | ||
| | |(φ) | ||
|- | |- | ||
! pitch | ! pitch (log₂f) | ||
| | |0 | ||
|0.21 | |0.21 | ||
|0.39 | |0.39 | ||
|0.55 | |0.55 | ||
|0.69 | |(0.69) | ||
|- | |- | ||
! length | ! length (1/f) | ||
|1 | |1 | ||
|0.87 | |0.87 | ||
|0.76 | |0.76 | ||
|0.68 | |0.68 | ||
| | |(1/φ) | ||
|} | |} | ||
An [[OD|OD (or otonal division)]] is a specific (rational) type of EFD. | |||