What is "Blue Note"?
Definition : Blue Note Frequency
Integer : m, n
3 ^ m × 2 ^ n
m + n = 6, 7, 8
Blue Note :
64, 96, 144, 216, 324, 486,729
128, 192, 288, 432, 648, 972, 1458, 2187
256, 384, 576, 864, 1296, 1944, 2916, 4374, 6561
Case : Blue Note 288
288 / B4 [ 2nd String, Nut ] = 75/64
Case : Blue Note 384
384 / E4 [ 1st String, Nut ] = 7/6 * ∆
Blue Note Interval
[ 7/6, 75/64 ]
( 75/64 ) / ( 7/6 ) = ∆ ^ 2