Music Theory from 0 to 1「#2」

The wester music has 12 notes today. 

Use # to indicate that we’re ascending. Conversely, using b to indicate that we’re descending.

From a C to higher or lower C, it calls a register(c3 – > c4 = 3rd register). Also, C to the next higher or lower C calls octave.

C4 = 4th register = middle C

G6 means a particular G in the C6 – > C7

A4 = 440HZ

standard tuning makes musicians play together and sound good

whole step > half step > microtones

12-TET is one tuning system

A#4 = A4 * (1.0594630943)^1

1.0594630943 ^ 12 = 2

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