the number of vibrations completed per unit of time is the amount that describes the frequency of reciprocating motion of a vibrating object. the common symbol for is f or v and the unit is 1 second
The interval between two notes is determined by the ratio of the two frequencies
Here are the ratios by interval:
Unison - 1:1 Minor Second - 16:15 Major Second - 9:8 Minor Third - 6:5 Major Third - 5:4 Perfect Fourth - 4:3 Tritone - 7:5 Perfect Fifth - 3:2 Minor Sixth - 8:5 Major Sixth - 5:3 Minor Seventh - 7:4 Major Seventh - 15:8 Octave 2:1
