SOUND & COLOR CORRESPONDENCE CHART by Paolo Di Pasquale © copyright 1988 - 2012

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###### Cycle by Cycle

Frequency in Hz / GHz = Cycles x sec.

Speed of Sound (20°C) = 343,4 Mt. x sec.

Speed of Light = 299.792,458 Km x sec.

It should be emphasized that to pass from one NOTE to the next octave of the same NOTE is enough to double the frequency in Hz. Theoretically, if we double the frequency of the INFRARED we will get ULTRAVIOLET frequency.

Based on this principle, we proceed by multiplying 2 of the frequency in Hertz of a TONE until we get close to values in GHz of the visible spectrum. Furthermore, if we multiply by 2^40 the frequency of 369,994 Hz of F# we obtain 406.813 GHz, frequency that corresponds at the border-line of the INFRARED.

We proceed with this system for all the TONES that make up the "Chromatic Scale" by completing the following Table:

The Hertz is equivalent to cycles per second.

In defining the second, the CIPM declared that "the standard to be employed is the transition between the hyperfine levels F = 4, M = 0 and F = 3, M = 0 of the ground state 2S1/2 of the cesium 133 atom, unperturbed by external fields, and that the frequency of this transition is assigned the value 9 192 631 770 hertz" thereby effectively defining the hertz and the second simultaneously.

As an SI unit, Hz can be prefixed; commonly used multiples are kHz , MHz, GHz and THz .

One hertz simply means "one cycle per second" (typically that which is being counted is a complete cycle); 100 Hz means "one hundred cycles per second",

and so on. The unit may be applied to any periodic event—for example, a clock might be said to tick at 1 Hz, or a human heart might be said to beat at 1.2 Hz. **x**

References: http://en.wikipedia.org/wiki/Hertzp:**/**

Chromatic Scale and Chromatic Numbers in Base 7

10/15 = 0, 40404040… (in Base 10 7/12 = 0,583333….)

One Octave of “Equal Tempered Scale” is composed by 12 Tones.

(Number 12 in Base 10 correspond at number 15 in Base 7)

First Octave in Base 7 is from 0 to 10

(F#0 = 0 and F#1 = 10)

The corresponding numbers of Tones in an Octave are between 0 and 10

One tone of Chromatic Scale is 10/15 of the Scale = 0,40404040.....…

0,00000000 = F#

0,00000000 + 0,40404040 = 0,40404040 = G

0,40404040 + 0,40404040 = 1,11111111 = G#

1,11111111 + 0,40404040 = 1,51515151 = A

1,51515151 + 0,40404040 = 2,22222222 = A#

2,22222222 + 0,40404040 = 2,62626262 = B

2,62626262 + 0,40404040 = 3,33333333 = C

3,33333333 + 0,40404040 = 4,04040404 = C#

4,04040404 + 0,40404040 = 4,44444444 = D

4,44444444 + 0,40404040 = 5,15151515 = D#

5,15151515 + 0,40404040 = 5,55555555 = E#

5,55555555 + 0,40404040 = 6,26262626 = F

6,26262626 + 0,40404040 = 10,0000000 = F# (one octave up)

This is the Sound Color Wheel in Base 7 - Cyclic Order