Electronic organ
OwnerBernard R. Katzinventor
Life of this patent
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Abstract
An electronic organ has a tone generating system for producing tones corresponding to notes of a musical scale. The tones and combinations thereof are selectable to provide different characteristics or "voices" which duplicate the various voices which are selectable on a pipe organ. The character of each such voice is determined by a single generator. The character of the output tone on a per manual basis is alterable by substituting or combining the outputs of different generators. The signal produced in this manner is sampled at a rate which translates it to an audio frequency.
Claims25
A tone generating system of an electronic organ for producing a plurality of notes each having a frequency corresponding to a different note on a musical scale, comprising:
- a plurality of voice signal generators, each producing a supersonic signal having a different waveshape;
- a manually operable main selection means for combining selected ones of said plurality of voice signal generators to produce a main signal;
- a plurality of key signal generators producing a plurality of key signals, each of said plurality of notes corresponding to and having a predetermined frequency relation with a different one of said plurality of key signals, the interfrequency spacing between adjacent ones of said plurality of notes being less than one octave, said plurality of notes having frequencies spanning more than an octave;
- a plurality of main sampling means each operable to repetitively sample said main signal in response to a corresponding one of said plurality of key signal generators, said plurality of main sampling means operable to produce a plurality of main sampled signals, different ones of said plurality of main sampling means being operable to produce octavely related notes, said plurality of main sampling means comprises a plurality of switch devices having commonly coupled input terminals;
- main output means for combining audio frequency components contained in said plurality of main sampled signals;
- and
- manually playable main keyboard means for actuating said tone generating system, said main keyboard means operable to provide to said main output means any combination of said plurality of main sampled signals to produce said plurality of notes, said plurality of switch devices having output terminals coupled to said main keyboard means, said main keyboard means being operable upon said switch devices to produce the effect of coupling selected ones of said output terminals together and to said main output means.
A tone generating system of an electronic organ for producing a plurality of notes each having a frequency corresponding to a different note on a musical scale comprising:
- a plurality of voice signal generators each producing a supersonic signal having a different waveshape;
- a manually operable main selection means for combining selected ones of said plurality of voice signal generators to produce a main signal;
- a plurality of key signal generators producing a plurality of key signals, each of said plurality of notes corresponding to and having a predetermined relation with a different one of said plurality of key signals, the inter-frequency spacing between adjacent ones of said plurality of notes being less than one octave, said plurality of notes having frequencies spanning more than an octave;
- a main sampling means for sampling said main signal and being operable to respond to and to combine into a single signal all of said plurality of key signals to produce said plurality of notes, said main sampling means being operable to produce notes that are spaced less than an octave, said main sampling means comprising a switch device having a signal input terminal coupled to said main signal, and
- manually playable main keyboard means for actuating said main sampling means and operable to cause said main sampling means to respond to any combination of said plurality of key signals, said switch device having a control input terminal coupled to said main keyboard means, said main keyboard means mixing selected ones of said key signals together and coupling said mixed signals to said control input terminal.
Dependencies are inferred from the claim text.