The table below
assumes that there is a direct relationship between pitch
and tempo. By reducing any pitch by an exact number of octaves
(in this case 8), a lower frequency is produced. Below about
16 cycles per second, our brains hear this ptich as a tempo.
This tempo can be expressed in beats per minutes, which is
a more familiar terminology for muscians. It is suggested
that this matching of tempo and pitch produces a pleasing
("consonant") effect.
The exactly calculations are shown in the first row of the
table below, and the beat frequency between the fifth at a
frequency ratio of 3 to 2, and the LucyTuned Fifth is also
shown in column (e) in ranges which match observable brainwave
frequencies. |