Single master tone generator

Claim 2

In a tone generator for an electric organ, a single master oscillator providing master oscillations, means for deriving from said master oscillations three submaster oscillations at least two of which differ from each other and from said master oscillations in frequency, means responsive to each of said sub-master oscillations for deriving six further oscillations, in terms of only two diverse factors, and means responsive to said six further oscillations for deriving 12 still further oscillations in terms of only two division factors, said 12 still further oscillations being interrelated according to a gamut of notes of a musical scale.

Claim 3

The combination according to claim 1 wherein said divisional factors are integral.

Claim 4

MHz, means dividing said signal into two parallel channels, means dividing the signal content of said channels by different factors, said factors being 879 divided by 880, and 2 divided by 3, to provide two sub-master oscillations, and means dividing each of said sub-master oscillators respectively by the factors 254, 269, 285, 308, 320, 339, 359 to provide 14 notes of frequencies selected according to the equitempered scale.

Claim 5

MHz, means dividing said signal into two parallel channels, means dividing the signal content of said channels by different factors, said factors being 879 divided by 880, and 2 divided by 3, to provide two sub-master oscillations, and means dividing each of said sub-master oscillators respectively by the factors 254, 269, 285, 308, 320, 339, 359 to provide 14 notes of frequencies selected according to the equitempered scale.

Claim 6

A tone generator for an electronic organ, comprising a source of master oscillations, two distinct dividers for deriving from said oscillations two sub-master oscillations of different frequencies, and rate scaler means for deriving from each of said sub-master oscillations seven tonal oscillations having frequencies according to an orderly gamut of muscial notes, altogether encompassing fourteen sequential notes of the musical scale.

Claim 7

A tone generator for an electronic organ, comprising a source of master oscillations, two distinct dividers for deriving from said oscillations two sub-master oscillations of different frequencies, and rate scaler means for deriving from each of said sub-master oscillations seven tonal oscillations having frequencies according to an orderly gamut of muscial notes, altogether encompassing fourteen sequential notes of the musical scale.

Claim 8

In a tone generator system, a source of master oscillator frequency of about 9 MHZ, means multiplying said master oscillator frequency by the factors 1, 483 divided by 512, 456 divided by 512, in three separate channels to obtain sub-master oscillation frequencies, means for dividing each of said sub-master oscillation frequencies by the factors 29 and 41, respectively, to obtain six further frequencies, and means for dividing each of said further frequencies by the factors 37 and 44 to obtain 12 frequencies corresponding with the frequencies of an octave of notes in the equitempered scale.

Claim 9

In a tone generator system, a source of master oscillator frequency of about 9 MHZ, means multiplying said master oscillator frequency by the factors 1, 483 divided by 512, 456 divided by 512, in three separate channels to obtain sub-master oscillation frequencies, means for dividing each of said sub-master oscillation frequencies by the factors 29 and 41, respectively, to obtain six further frequencies, and means for dividing each of said further frequencies by the factors 37 and 44 to obtain 12 frequencies corresponding with the frequencies of an octave of notes in the equitempered scale.

Claim 10

In a tone generator system, a master oscillator signal of frequency equal to approximately

Claim 11

In a tone generator system, a master oscillator signal of frequency equal to approximately

Claim 12

A tone generator for generating an octave of tones, comprising a master oscillator, 12 frequency dividers connected to said master oscillator and each selected to divide the frequency of said master oscillator by different integral factors, said integral factors being selected to provide division products arranged in frequency according to the equitempered scale, and means interposed between said master oscillator and selected ones of said frequency dividers for modifying the frequency of said master oscillator sufficiently to avoid undesired integral frequency relationships in the division products, wherein said last means is an exclusive OR gate, responsive to the output of said master oscillator as one input factor, and to a fraction of the output of one of said frequency dividers as another factor.

Claim 13

A tone generator for generating an octave of tones, comprising a master oscillator, 12 frequency dividers connected to said master oscillator and each selected to divide the frequency of said master oscillator by different integral factors, said integral factors being selected to provide division products arranged in frequency according to the equitempered scale, and means interposed between said master oscillator and selected ones of said frequency dividers for modifying the frequency of said master oscillator sufficiently to avoid undesired integral frequency relationships in the division products, wherein said last means is an exclusive OR gate, responsive to the output of said master oscillator as one input factor, and to a fraction of the output of one of said frequency dividers as another factor.

Claim 14

A tone signal generator, comprising a single source of a train of square wave pulses divisible by an integer to provide a tone signal sharp within the equitempered scale, and means for modulating said train of square waves by periodically omitting a half cycle of square wave from said train at a periodicity such that said tone signal is reduced in frequency by not more than 4.5 cents.

Claim 15

A tone signal generator, comprising a single source of a train of square wave pulses divisible by an integer to provide a tone signal sharp within the equitempered scale, and means for modulating said train of square waves by periodically omitting a half cycle of square wave from said train at a periodicity such that said tone signal is reduced in frequency by not more than 4.5 cents.

Claim 16

A tone signal generator, comprising a single source of a train of square wave pulses of a frequency divisible by an integer to provide a tone signal nearly but not precisely within the equitempered scale on division by an integer, an integral divider in cascade with said source, and means interposed between said source and said integral divider for effectively reducing said frequency by periodically deleting at least one half of one cycle of said square wave pulses, to bring said tone signal more nearly into precise frequency correspondence with a note of said scale.

Claim 17

A tone signal generator, comprising a single source of a train of square wave pulses of a frequency divisible by an integer to provide a tone signal nearly but not precisely within the equitempered scale on division by an integer, an integral divider in cascade with said source, and means interposed between said source and said integral divider for effectively reducing said frequency by periodically deleting at least one half of one cycle of said square wave pulses, to bring said tone signal more nearly into precise frequency correspondence with a note of said scale.

Claim 18

A tone generator for generating tones of an electronic organ, comprising a single master oscillator, means including rate scalers for deriving from said single master oscillator plural subsidiary master oscillators respectively all differing in frequency among themselves and differing from the frequency of said master oscillator and from one anoTher by factors of the order of 1 cent, and means responsive to different ones of said oscillators for generating different octaves of tone signals whereby different octaves of tone signals provided by said tone generator are relatively unlocked while all are locked to said single master oscillator.

Claim 19

A tone generator for generating tones of an electronic organ, comprising a single master oscillator, means including rate scalers for deriving from said single master oscillator plural subsidiary master oscillators respectively all differing in frequency among themselves and differing from the frequency of said master oscillator and from one anoTher by factors of the order of 1 cent, and means responsive to different ones of said oscillators for generating different octaves of tone signals whereby different octaves of tone signals provided by said tone generator are relatively unlocked while all are locked to said single master oscillator.

Claim 20

A tone generator system for generating tone signals of a multi-generator organ from a single master oscillator, comprising means including rate scalers for deriving from said single master oscillator plural subsidiary master oscillators each displaced in frequency by a different value from the frequency of said single master oscillator, and means responsive to each of said subsidiary master oscillators for controlling a separate tone generator of said organ, each of said separate tone generators including multiple octaves of tones.

Claim 21

A tone generator system for generating tone signals of a multi-generator organ from a single master oscillator, comprising means including rate scalers for deriving from said single master oscillator plural subsidiary master oscillators each displaced in frequency by a different value from the frequency of said single master oscillator, and means responsive to each of said subsidiary master oscillators for controlling a separate tone generator of said organ, each of said separate tone generators including multiple octaves of tones.