Brèves explications mathématiques

do
do
sol
do
mi sol
sib do
Note entendue
100 200 300 400 500 600 700
1 345678
×2×2×2
×3/2×4/3×5/4×6/5×2
2
×7/5
×2
×3/2×4/3×5/4×6/5
×7/5
a/b
R= log (1/(ab)) a, b
C Db D Eb E F Gb G Ab A Bb B C
do re mi fa sol la si do
R

2 3 5 1/5 7 −1/3
11 +1/4 13
6/5=2×3/5
ZP
×2
/3
/5
×7
×3
×5