Tremulant and chorus generating system for electrical musical instruments

Claim 2

A stereophonic tremulant system for an electrical musical instrument comprising: a source of electrical signals representative of music; a first transmission channel having an input and output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; first modulation means connected between said input and output of said first transmission channel for continuously phase modulating signals in said first channel so that the resulting frequency modulation of said first channel signals is greater at low signal frequencies than at high signal frequencies; second modulation means connected between said inpuT and output of said second channel for continuously modulating signals in said second channel so that the resulting frequency modulation of said second channel signals is greater at high frequencies than at low frequencies; and means for applying the same signals from said source of electrical signals to both said first and said second transmission channel inputs.

Claim 3

A stereophonic tremulant system for an electrical musical instrument comprising: a source of electrical signals representative of music; a first transmission channel having an input and output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; first modulation means connected between said input and output of said first transmission channel for continuously phase modulating signals in said first channel so that the resulting frequency modulation of said first channel signals is greater at low signal frequencies than at high signal frequencies; second modulation means connected between said inpuT and output of said second channel for continuously modulating signals in said second channel so that the resulting frequency modulation of said second channel signals is greater at high frequencies than at low frequencies; and means for applying the same signals from said source of electrical signals to both said first and said second transmission channel inputs.

Claim 4

A stereophonic tremulant system for an electrical musical instrument comprising: a source of electrical signals representative of music; a first transmission channel having an input and output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; first modulation means connected between said input and output of said first transmission channel for continuously phase modulating signals in said first channel so that the resulting frequency modulation of said first channel signals is greater at low signal frequencies than at high signal frequencies; second modulation means connected between said inpuT and output of said second channel for continuously modulating signals in said second channel so that the resulting frequency modulation of said second channel signals is greater at high frequencies than at low frequencies; and means for applying the same signals from said source of electrical signals to both said first and said second transmission channel inputs.

Claim 5

Equipment according to claim 1 wherein said second modulation means includes a rotor.

Claim 6

A tremulant system for an electrical musical instrument, comprising: a plurality of tone generators, each capable of producing at least some of the notes of a musical scale; means for collecting a first sub-group of signals from certain of said generators; means for collecting a second sub-group of signals from others of said generators; a first transmission channel having an input and an output and including a first loudspeaker connected to said first output; a second transmission channel having an input and output and including a second loudspeaker connected to said second output; first modulating means connected between said input and said output of said first transmission channel for continuously modulating signals in said first transmission channel; second modulating means for continuously and differently modulating signals in said second transmission channel; first matrixing means for combining signals from both said first and said second sub-groups and for applying the combined signals to the input of said first transmission channel; and second matrixing means including phase shifting means for combining signals from both said first and said second sub-groups in a displaced phase relationship and for applying the combined signals to the input of said second transmission channel.

Claim 7

A tremulant system for an electrical musical instrument, comprising: a plurality of tone generators, each capable of producing at least some of the notes of a musical scale; means for collecting a first sub-group of signals from certain of said generators; means for collecting a second sub-group of signals from others of said generators; a first transmission channel having an input and an output and including a first loudspeaker connected to said first output; a second transmission channel having an input and output and including a second loudspeaker connected to said second output; first modulating means connected between said input and said output of said first transmission channel for continuously modulating signals in said first transmission channel; second modulating means for continuously and differently modulating signals in said second transmission channel; first matrixing means for combining signals from both said first and said second sub-groups and for applying the combined signals to the input of said first transmission channel; and second matrixing means including phase shifting means for combining signals from both said first and said second sub-groups in a displaced phase relationship and for applying the combined signals to the input of said second transmission channel.

Claim 8

A tremulant system according to claim 3, further including means for causing said phase relationship to vary at a sub-audio rate.

Claim 9

A system according to claim 4, in which said second modulating means includes a rotor.

Claim 10

A tremulant system for an electrical musical instrument, comprising: a plurality of tone generators, each capable of producing at least some of the notes of a musical scale; means for collecting a first sub-group of signals from certain of said generators; means for collecting a second sub-group of signals from others of said generators; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; first modulating means connected between the input and output of said first transmission channel for continuously modulating signals in said first transmission channel; second modulating means for continuously modulating signals in said second transmission channel; first matrixing means for combining the signals from both said first and second sub-groups and applying the combined signals to the input of said first transmission channel; and second matrixing means including phase shifting means for combining in a displaced phase relationship the signals from said first and said second sub-groups and applying the combined signals to the input of said second transmission channel.

Claim 11

A tremulant system for an electrical musical instrument, comprising: a plurality of tone generators, each capable of producing at least some of the notes of a musical scale; means for collecting a first sub-group of signals from certain of said generators; means for collecting a second sub-group of signals from others of said generators; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; first modulating means connected between the input and output of said first transmission channel for continuously modulating signals in said first transmission channel; second modulating means for continuously modulating signals in said second transmission channel; first matrixing means for combining the signals from both said first and second sub-groups and applying the combined signals to the input of said first transmission channel; and second matrixing means including phase shifting means for combining in a displaced phase relationship the signals from said first and said second sub-groups and applying the combined signals to the input of said second transmission channel.

Claim 12

A tremulant system according to claim 6, and including additional means in said second transmission channel for causing the signals in said second channel to be continuously phase rotated at a sub tremulant rate.

Claim 13

A tremulant system according to claim 6, wherein one of said plurality of tone generators produces only some of the notes of a musical scale and wherein another of said plurality of tone generators produces other notes of said musical scale.

Claim 14

A tremulant system according to claim 6, wherein said plurality of tone generators produce the tones of a musical scale, one of said tone generators producing alternate tones of saId scale and another one of said tone generators producing the remaining tones of said scale.

Claim 15

A tremulant system according to claim 6, wherein one of said plurality of tone generators produces a first octave of a musical scale, and wherein another of said plurality of tone generators produces a second octave of said musical scale.

Claim 16

A chorus producing tremulant system for an electrical musical instrument comprising: a source of electrical signals representative of music; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; means connecting said source of signals to the input of both said first and said second transmission channels; first modulation means connected between the input and output of said first transmission channel for continuously phase modulating signals in said first channel at a tremulant rate; second modulation means connected between the input and output of said second channel at a tremulant rate; and additional means in at least one of said channels for causing signals in said one of said channels to be continuously phase rotated at a sub tremulant rate.

Claim 17

A chorus producing tremulant system for an electrical musical instrument comprising: a source of electrical signals representative of music; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; a second transmission channel having an input and an output and including a second loudspeaker connected to said output; means connecting said source of signals to the input of both said first and said second transmission channels; first modulation means connected between the input and output of said first transmission channel for continuously phase modulating signals in said first channel at a tremulant rate; second modulation means connected between the input and output of said second channel at a tremulant rate; and additional means in at least one of said channels for causing signals in said one of said channels to be continuously phase rotated at a sub tremulant rate.

Claim 18

A chorus producing tremulant system for an electrical musical instrument comprising: a first tone generator for producing a first series of notes of a musical scale; a second tone generator for producing a second series of notes of a musical scale; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; the input to said first transmission channel being connected to said first tone generator; a second transmission channel having an input and an output and including a second loudspeaker connected to said output, the input to said second transmission channel being connected to said second tone generator; first modulation means connected between the input and output of said first channel for phase modulating signals in said channel at a tremulant rate; second modulation means connected between the input and output of said second channel for modulating signals in said second channels at a tremulant rate; and additional means in at least one of said channels for continuously phase rotating signals in said one of said channels at a sub tremulant rate.

Claim 19

A chorus producing tremulant system for an electrical musical instrument comprising: a first tone generator for producing a first series of notes of a musical scale; a second tone generator for producing a second series of notes of a musical scale; a first transmission channel having an input and an output and including a first loudspeaker connected to said output; the input to said first transmission channel being connected to said first tone generator; a second transmission channel having an input and an output and including a second loudspeaker connected to said output, the input to said second transmission channel being connected to said second tone generator; first modulation means connected between the input and output of said first channel for phase modulating signals in said channel at a tremulant rate; second modulation means connected between the input and output of said second channel for modulating signals in said second channels at a tremulant rate; and additional means in at least one of said channels for continuously phase rotating signals in said one of said channels at a sub tremulant rate.