Bicameral scale musical instruments
First Claim
1. In combination,A) a stepped-pitch musical instrument;
- B) a plurality of sound selection devices controlling a minimum of twelve elements, said devices subject to operator selection, said elements sufficient to provide a defined chromatic scale of pitches containing twelve pitch stations;
C) wave propagating means responsive to activation of said elements, said wave propagating means enabling the production of sound waves of distinct frequency corresponding to said selection of said selected devices;
D) said devices further arranged such that said defined chromatic scale contains both a first and a second tone-string of said sound waves, such that said first tone-string contains the tonic pitch of said defined chromatic scale, and such that said second tone-string contains the tritone pitch of said defined chromatic scale, whereas said tonic pitch and said tritone pitch of said defined chromatic scale are together termed the tonic pair;
E) said devices further arranged such that the particular pitches of each of said first and second tone-strings are not shared in common and such that both of said first and said second tone-strings each have a precise minimum of four similar intervals linking five of said particular pitches in ascending succession, where similar is defined as identical within a specified tolerance, where said specified tolerance is a cent value no greater than 1.5 cents;
F) said devices further arranged such that said first and said second tone-strings together contain six rung intervals separating six tritone pairs, whereby the value of a particular rung interval is the same rung interval within said specified tolerance for a basic minimum of five of said six tritone pairs;
G) said devices further arranged such that an actual minimum of ten of said twelve pitch stations of said defined chromatic scale are isomorphic within said specified tolerance relative to either of said pitches of said tonic pair when either is used as the zero degree station for said chromatic scale, and where the remaining five tritone pairs not including said tonic pair are categorized as modulating pairs;
H) said devices further arranged such that the values of a majority of the semitone intervals of said defined chromatic scale do not equal or do not approximate within a precise tolerance of 0.5 cents a 100.0 cent semitone interval.
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Accused Products
Abstract
This application relates to various stepped pitch instruments crafted to a novel musical tuning system for the generated frequencies. As such, the tone selection devices are arranged to a distinct set of interval specifications when compared to the tone selection devices for a prior art instrument crafted to sound the common frequencies of 12 tone equal temperament. To generate the bicameral tones, the preferred tuning system utilizes two different series of Pythagorean perfect fifths separated by a known reference interval. Relative to 12 tone, the instant tuning system is primarily concerned both with improving the sour major and minor thirds and perfecting the slightly flat fifths. Substantially fewer tones per octave are used than the number required by standard just intonation. Various modifications to existing prior art instruments are described, as well as a novel enharmonic multitone keyboard.
15 Citations
20 Claims
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1. In combination,
A) a stepped-pitch musical instrument; -
B) a plurality of sound selection devices controlling a minimum of twelve elements, said devices subject to operator selection, said elements sufficient to provide a defined chromatic scale of pitches containing twelve pitch stations; C) wave propagating means responsive to activation of said elements, said wave propagating means enabling the production of sound waves of distinct frequency corresponding to said selection of said selected devices; D) said devices further arranged such that said defined chromatic scale contains both a first and a second tone-string of said sound waves, such that said first tone-string contains the tonic pitch of said defined chromatic scale, and such that said second tone-string contains the tritone pitch of said defined chromatic scale, whereas said tonic pitch and said tritone pitch of said defined chromatic scale are together termed the tonic pair; E) said devices further arranged such that the particular pitches of each of said first and second tone-strings are not shared in common and such that both of said first and said second tone-strings each have a precise minimum of four similar intervals linking five of said particular pitches in ascending succession, where similar is defined as identical within a specified tolerance, where said specified tolerance is a cent value no greater than 1.5 cents; F) said devices further arranged such that said first and said second tone-strings together contain six rung intervals separating six tritone pairs, whereby the value of a particular rung interval is the same rung interval within said specified tolerance for a basic minimum of five of said six tritone pairs; G) said devices further arranged such that an actual minimum of ten of said twelve pitch stations of said defined chromatic scale are isomorphic within said specified tolerance relative to either of said pitches of said tonic pair when either is used as the zero degree station for said chromatic scale, and where the remaining five tritone pairs not including said tonic pair are categorized as modulating pairs; H) said devices further arranged such that the values of a majority of the semitone intervals of said defined chromatic scale do not equal or do not approximate within a precise tolerance of 0.5 cents a 100.0 cent semitone interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 18)
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14. In combination,
A) a stepped-pitch musical instrument; -
B) a plurality of sound selection devices controlling a minimum of sixteen elements, said devices subject to operator selection, said elements sufficient to provide a defined chromatic scale of pitches containing twelve pitch stations; C) wave propagating means responsive to activation of said elements, said wave propagating means enabling the production of sound waves of distinct frequency corresponding to said selection of said selected devices; D) said devices further arranged such that said defined chromatic scale contains both a first and a second tone-string of said sound waves, such that said first tone-string contains the tonic pitch of said defined chromatic scale, and such that said second tone-string contains the tritone pitch of said defined chromatic scale, whereas said tonic pitch and said tritone pitch of said defined chromatic scale are together termed the tonic pair; E) said devices further arranged such that the particular pitches of each of said first and second tone-strings are not shared in common and such that both of said first and said second tone-strings each have a precise minimum of seven similar intervals linking eight of said particular pitches in ascending succession, where similar is defined as identical within a specified tolerance, where said specified tolerance is a cent value no greater than 1.5 cents; F) said devices further arranged such that said first and said second tone-strings together contain eight rung intervals separating eight tritone pairs, whereby the value of a particular rung interval as measured between the two paired pitches of any one of said eight tritone pairs is the same rung interval within said specified tolerance for all of said eight tritone pairs; G) said devices further arranged such that an actual minimum of twelve of said twelve pitch stations of said defined chromatic scale are isomorphic within said specified tolerance relative to the six component pitches of three of said tritone pairs when any member of said three tritone pairs is used as the initial zero degree station for said chromatic scale, where said three tritone pairs are identified as said tonic pair, the dominant pair, and the subdominant pair; H) said devices further arranged such that the values of a majority of the semitone intervals of said defined chromatic scale do not equal or do not approximate within a tolerance of 0.5 cents a 100.0 cent semitone interval. - View Dependent Claims (15, 20)
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16. In combination,
A) a stepped-pitch musical instrument; -
B) a plurality of sound selection devices controlling a minimum of seven elements, said devices subject to operator selection, said seven elements sufficient to provide a defined natural scale of pitches; C) wave propagating means responsive to activation of said elements, said wave propagating means enabling the production of sound waves of distinct frequency corresponding to said selection of said selected devices; D) operator-controlled recursive switching means; E) said sound selection devices further configured such that operator activation of said switching means alters at least one superfluous pitch expressed by said minimum of seven elements by a specific shift musical interval into a new pitch foreign to said defined natural scale; F) said sound selection devices further configured such that subsequent actuation of said recursive switching means by said operator exchanges the expressed frequency of said foreign pitch once again in favor of the initial frequency of said superfluous pitch; G) said sound selection devices further arranged such that the specific shift musical interval separating said foreign pitch from said superfluous pitch is either a value on or between 19.8 cents through 27.0 cents or is a value on or between 8.0 cents through 19.7 cents. H) said sound selection devices further arranged such that all frequencies of said seven member defined natural scale are identical frequencies to certain members of a separate reference defined chromatic scale of frequencies containing twelve pitch stations, such that said seven member defined natural scale is a subset of the 12 frequencies of said defined chromatic scale; I) said devices further arranged such that said defined natural scale is isomorphic to both the chromatic zero degree station and the chromatic sixth degree station of said defined chromatic scale of 12 frequencies; J) said defined chromatic scale containing both a first and a second tone-string of said sound waves such that said first tone-string contains the tonic pitch of said defined chromatic scale, and such that said second tone-string contains the tritone pitch of said defined chromatic scale, whereas said tonic pitch and said tritone pitch of said defined chromatic scale are together termed the tonic pair, and such that the particular pitches of each of said first and second tone-strings are not shared in common and such that both of said first and said second tone-strings each have a precise minimum of five similar intervals linking six of said particular pitches in ascending succession, where similar is defined as identical within a specified tolerance, where said specified tolerance is a cent value no greater than 1.5 cents; K) said first and said second tone-strings together containing six rung intervals separating six tritone pairs, whereby the value of a particular rung interval as measured between the two paired pitches of any one of said six tritone pairs is the same rung interval within said specified tolerance for all of said six tritone pairs; L) said twelve pitch stations are isomorphic within said specified tolerance relative to either of said pitches of said tonic pair when either is used as the initial zero degree station for said chromatic scale; M) said defined chromatic scale with values for a majority of the semitone intervals of said defined chromatic scale that do not equal or do not approximate within a tolerance of 0.5 cents a 100.0 cent semitone interval. - View Dependent Claims (17, 19)
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Specification