Just Hammond: Difference between revisions

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==== Example 1: Mapping a single interval====
==== Example 1: Mapping a single interval====


In this first example we map the combination of a Hammond Organ’s note E and a higher note A (a fourth up) to the harmonic series.
In this example we map the combination of a Hammond Organ’s note E and a higher note A (a fourth up) to the harmonic series.


<u>Table 2</u>: Fourth E-A
<u>Table 2</u>: The fourth E-A


{| class="wikitable"
{| class="wikitable"
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! colspan="5" style="text-align: center;" |  
! colspan="5" style="text-align: center;" |  
Prime <br>
Prime <br>
Factorization...
Factorization
! style="text-align: center;" |  
! style="text-align: center;" |  
Ascending<br>
Ascending<br>
Line 258: Line 258:
1+(ln(P)/ln(2))
1+(ln(P)/ln(2))
|-
|-
| colspan="2" style="text-align: center;" | Fraction
| colspan="2" style="text-align: center;" |Fraction<br>
(C)/(D)
(C)/(D)
|-
|-
Line 302: Line 302:
|}
|}


The resulting interval E-A appears between partial # 206 and partial # 275. Thus the frequency ratio is (275:206), which equals 500.14 cents.
The resulting interval appears between partial # 206 and partial # 275. Thus the frequency ratio is (275:206), which equals 500.14 cents.


==== Example 2: Supplementing a Fifth ====
==== Example 2: Mapping a chord ====
The second example illustrates how to map the resulting sus4-chord E-A-B to the harmonic series.
Adding an upper fifth (note B), the second example illustrates how to map the sus4-chord E-A-B to the harmonic series.


<u>Table 3</u>: sus4-chord E-A-B
<u>Table 3</u>: sus4-chord E-A-B
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! colspan="6" style="text-align: center;" |  
! colspan="6" style="text-align: center;" |  
Prime<br>
Prime<br>
Factorization...
Factorization
! style="text-align: center;" |  
! style="text-align: center;" |  
Ascending<br>
Ascending<br>
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1+(ln(P)/ln(2))
1+(ln(P)/ln(2))
|-
|-
| colspan="2" style="text-align: center;" | Fraction
| colspan="2" style="text-align: center;" |Fraction<br>
(C)/(D)
(C)/(D)
|-
|-
Line 402: Line 402:
The supplemental note B establishes an additional prime factor. We find the matching pattern of partials for this sus4-chord (1442:1925:2160) farther up in the harmonic series, where this chord spans the boundary between the 11<sup>th</sup> and the 12<sup>th</sup> octave.
The supplemental note B establishes an additional prime factor. We find the matching pattern of partials for this sus4-chord (1442:1925:2160) farther up in the harmonic series, where this chord spans the boundary between the 11<sup>th</sup> and the 12<sup>th</sup> octave.


==== Example 3: [...WILL BE CONTINUED] ====
==== Example 3: Hammond - full scale ====
Table 4: Full set of pitchclasses
 
{| class="wikitable"
! rowspan="3" style="text-align: center;" | <br><br><br>
Pitch<br>
Class
! colspan="2" style="text-align: center;" |
HAMMOND<br>
Gear Ratio<br>
(canceled)
! colspan="16" style="text-align: center;" |
Prime <br>
Factorization
! style="text-align: center;" |
Ascending<br>
Partial Numbers of<br>
an Overtone Scale
! style="text-align: center;" |
Partial Found<br>
in Octave #
|-
| style="text-align: center;" | (C)
| style="text-align: center;" | (D)
| rowspan="2" colspan="16" style="text-align: center; background-color:#cbcefb;" |
... of Column (D)<br><br><br><br>
| rowspan="2" style="text-align: center;" |
Recalculated<br>
Numerator =<br>
Partial #<br>
P=LCM *(C)/(D)
| rowspan="2" style="text-align: center;" |
Counted from<br>
1/1:<br>
Octave# =<br>
1+(ln(P)/ln(2))
|-
| colspan="2" style="text-align: center;" |Fraction<br>
(C)/(D)
|-
| style="text-align: center;" | C
| style="text-align: right; background-color:#ffffff;" | 85
| style="font-weight:bold; background-color:#ffffff;" | 104
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 13
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 15,003,356,791,500
| style="text-align: center;" | 44.8
|-
| style="text-align: center;" | C#
| style="text-align: right; background-color:#ffffff;" | 71
| style="font-weight:bold; background-color:#ffffff;" | 82
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 41
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 15,894,517,438,800
| style="text-align: center;" | 44.9
|-
| style="text-align: center;" | D
| style="text-align: right; background-color:#ffffff;" | 67
| style="font-weight:bold; background-color:#ffffff;" | 73
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 73
| style="text-align: center;" | 16,848,249,818,400
| style="text-align: center;" | 44.9
|-
| style="text-align: center;" | D#
| style="text-align: right; background-color:#ffffff;" | 35
| style="font-weight:bold; background-color:#ffffff;" | 36
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 3
| style="text-align: center; background-color:#cbcefb;" | 3
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 17,847,130,301,000
| style="text-align: center;" | 45.0
|-
| style="text-align: center;" | E
| style="text-align: right; background-color:#ffffff;" | 103
| style="font-weight:bold; background-color:#ffffff;" | 100
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 5
| style="text-align: center; background-color:#cbcefb;" | 5
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 18,907,759,758,888
| style="text-align: center;" | 45.1
|-
| style="text-align: center;" | F
| style="text-align: right; background-color:#ffffff;" | 12
| style="font-weight:bold; background-color:#ffffff;" | 11
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 11
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 20,025,870,883,200
| style="text-align: center;" | 45.2
|-
| style="text-align: center;" | F#
| style="text-align: right; background-color:#ffffff;" | 37
| style="font-weight:bold; background-color:#ffffff;" | 32
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 21,225,337,107,975
| style="text-align: center;" | 45.3
|-
| style="text-align: center;" | G
| style="text-align: right; background-color:#ffffff;" | 49
| style="font-weight:bold; background-color:#ffffff;" | 40
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 5
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 22,487,384,179,260
| style="text-align: center;" | 45.4
|-
| style="text-align: center;" | G#
| style="text-align: right; background-color:#ffffff;" | 48
| style="font-weight:bold; background-color:#ffffff;" | 37
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 37
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 23,814,549,158,400
| style="text-align: center;" | 45.4
|-
| style="text-align: center; font-weight:bold;" | A
| style="text-align: right; background-color:#ffffff;" | 11
| style="font-weight:bold; background-color:#ffffff;" | 8
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 25,240,941,425,700
| style="text-align: center;" | 45.5
|-
| style="text-align: center;" | A#
| style="text-align: right; background-color:#ffffff;" | 67
| style="font-weight:bold; background-color:#ffffff;" | 46
| style="text-align: center; background-color:#cbcefb;" | 2
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 23
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 26,737,439,929,200
| style="text-align: center;" | 45.6
|-
| style="text-align: center;" | B
| style="text-align: right;" | 54
| style="font-weight:bold;" | 35
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 5
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" | 7
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center; background-color:#cbcefb;" |
| style="text-align: center;" | 28,322,303,106,240
| style="text-align: center;" | 45.7
|-
| colspan="3" |
Multiply --------><br>
to find (D)'s least<br>
common multiple<br>
(LCM)
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 2<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 2<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 2<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 2<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 2<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 3<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 3<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 5<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 5<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 7<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 11<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 13<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 23<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 37<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 41<br><br><br><br>
| style="text-align: center; font-weight:bold; background-color:#cbcefb;" | 73<br><br><br><br>
| style="text-align: center; font-weight:bold;" |
18,357,048,309,600<br><br>
(LCM)<br><br>
| style="text-align: center;" |
45.1<br><br>
 
Decimal printed<br>
for orientation only
|}
 
[...WILL BE CONTINUED]




==References==
==References==
<references />
<references />