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4429607 Light beam musical instrument  
A musical instrument is disclosed in which light beams striking a detector produce various tones and the loudness of the sounds produced is dependent upon the intensity of the light beam which can...
4282791 Keyer system for an electronic organ  
A keying system provides selectable decay times for individual frequency components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of...
4278001 Selective keyer biasing to enhance percussion effect  
A keying system provides selectable decay times for individual components of a tone to be generated by an electronic organ having a top octave generator producing a multiplicity of rectangular...
4228716 Device and method for optical tone generation  
An optical tone generator comprises sensing means responsive to light of different respective colors for selectively producing respective output signals corresponding to such respective colors,...
4216691 Octave assignment system for electronic musical instrument  
An electronic organ uses several top octave synthesizer circuits for producing the various tones used in the organ. Each of the top octave synthesizers is capable of producing any tone which can...
4205581 Keyer system  
An organ keyer system, especially a keyer system operated by logic level signals, such as occur in multiplexing.The keyer system herein described is especially intended for manufacture by large...
4176575 Improved touch operated capacitance switch circuit for an electronic organ  
Disclosed is a touch operated capacitance switch which may be used in connection with a digital arpeggio system for an electronic organ that through the use of digital techniques permits...
4173916 Tone generator system for an electronic organ  
A tone generator system for an electronic organ which is capable of being fabricated into an LSI structure and receives a saw-tooth wave or staircase wave as an input thereto comprises a frequency...
4077293 Sample hold arrangement for a key signal in an electronic musical instrument  
A sample hold arrangement for a key signal in an electronic musical instrument in which a keyboard circuit generates a voltage corresponding to a depressed key. The keyboard circuit is connected...
3860876 MUSICAL APPARATUS  
The present disclosure relates to apparatus for improving the tonal characteristics of a musical instrument in such a manner as to elicit excited responses from professional musicians; and more...
3833750 REED ACCORDION WITH PROGRAMMABLE ELECTRONIC ORGAN SOUND  
A reed accordion has a set of note generators each coupled to a respective key and is connected through a plurality of tone filters to an output. Each filter corresponds to a respective organ...
3825667 ALTERNATE HIGH-LOW AND ROOT-FIFTH SELECTION SYSTEM FOR ELECTRICAL MUSICAL INSTRUMENTS  
A note selection system for a keyboard type electrical musical instrument which supplies to output leads the note signals corresponding to the highest and lowest notes of a group of notes played,...
3748367 PERCUSSIVE MUSICAL INSTRUMENT WITH TRANSDUCER FOR ACTUATING AN ELECTRONIC TONE GENERATOR  
A microphone is positioned adjacent a playing member capable of being struck with drum sticks, foot-operated beaters, or the like. The electric output of the microphone, in response to such...
3746775 KEYER CIRCUIT FOR ELECTRONIC MUSICAL INSTRUMENT  
In an electronic musical instrument, a sustain keyer circuit comprises a field effect transistor, a resistor and a key-operated switch all connected in series between a ground a power line. An...
3715445 MUSICAL INSTRUMENT HAVING DC-KEYING CIRCUIT  
A musical instrument, such as an electronic organ, includes normally constantly running tone-signal sources which are coupled by key-operated switches to a transducer for converting the...
3708604 ELECTRONIC ORGAN WITH RHYTHMIC ACCOMPANIMENT AND BASS  
An electronic organ having upper and lower and pedal keyboards and selectively adjustable for conventional playing in which each key of the lower keyboard and the pedals of the pedal keyboard play...
3671659 PLURAL TONE SELECTOR FOR AN ELECTRONIC MUSICAL INSTRUMENT  
A plural tone selector for an electronic musical instrument comprises first and second latching selectors each having a plurality of input terminals supplied with tone signals of different...
3665091 CONTROL CIRCUIT FOR SUSTAIN KEYER CIRCUIT IN ELECTRONIC MUSICAL INSTRUMENT  
An electronic musical instrument has electronic keyers each including a time constant circuit containing a capacitor to give a sustain envelope to a switched tone signal. The improvement...
3663737 KEYING CIRCUIT FOR SIMULTANEOUSLY SWITCHING A PLURALITY OF CIRCUITS  
A plurality of circuits employed in an electronic musical instrument and having different time constants are simultaneously switched by a keying circuit according to the present invention which is...
3655904 ELECTRIC VARIABLE TONE PERCUSSION INSTRUMENT  
An electric variable tone percussion instrument comprises a source of periodic signals, storage means coupled to the source of periodic signals, output means coupled to the storage means and...
3627895 MUSICAL ELECTRONIC INSTRUMENT KEYING WITH DIRECT CURRENT OF PLURAL MUSICAL EFFECTS  
An electronic musical instrument is provided with a DC current switching circuit for controlling gates that are disposed between various sources of AC potential of audio signal frequency and...
3617597 TRIANGLE SOUND SIMULATING DEVICE  
A triangle sound simulating device to be employed in an electronic musical instrument is composed of a fundamental sound signal oscillator, at least one additional sound signal oscillator for...
3571484 WHITE NOISE SWITCHING SYSTEM FOR PERCUSSION TONE SYNTHESIS  
A switching system in which a wave clipping circuit removes one side of a white noise signal, and a switching circuit switches this one-side-removed signal in accordance with bias control between...
3562396 ELECTRONIC GATING AND COMPONENT ASSEMBLY FOR ELECTRONIC MUSICAL INSTRUMENT  
Many hundreds of electronic components, including semiconductors and resistors, that comprise the electronic gating and switching circuitry for an electronic organ, are assembled in a compact...
3555167 MULTIVOICE CIRCUITRY WITH VIBRATO FOR ELECTRONIC MUSICAL INSTRUMENT  
A sinusoidal waveform signal of audiofrequency is clipped at one or more amplitude levels to establish a plurality of signal components. Any one of the signal components, the combination of two...
3543281 ELECTRONIC MUSICAL INSTRUMENT DUAL PURPOSE GATE AND KEYING CIRCUIT  
3536819 ELECTRONIC MUSICAL INSTRUMENTS WITH SMALL TONE GENERATORS ADJACENT KEY SWITCHES  
3535971 SWITCHING CIRCUIT FOR ELECTRONIC MUSICAL INSTRUMENTS  
3535430 TRANSISTOR FREQUENCY GLIDE CONTROL FOR MUSICAL TWIN-T OSCILLATOR TONE GENERATORS  
3535429 INTEGRATED CIRCUIT SWITCHING DEVICE FOR ELECTRONIC MUSICAL INSTRUMENTS  
3524365 ELECTRONIC MUSICAL INSTRUMENTS PLAYED BY MEANS OF A STYLUS  
3524009 PERCUSSION RHYTHM DEVICE FOR KEYBOARD MUSICAL INSTRUMENTS  
3516319 SIMULATED BRUSHED CYMBAL TONE GENERATING SYSTEM FOR ELECTRONIC ORGANS  
3511917 VOLTAGE SELECTION ARRANGEMENT WHEREIN SAME CONTACTS SWITCH SELECTABLE D.C. PITCH POTENTIAL AND CONSTANT A.C. FOR CONTROL FUNCTION  
3499094 MANUAL OR KNEE OPERABLE EFFECT SELECTOR SYSTEM IN ELECTRONIC MUSICAL INSTRUMENT  
3497605 CIRCUIT FOR OBTAINING REPEATER AND PERCUSSION EFFECTS IN AN ELECTRICAL MUSICAL INSTRUMENT UTILIZING A FIELD EFFECT TRANSISTOR  
3446904 KEY SYSTEM FOR ELECTRICAL MUSICAL INSTRUMENT  
3444306 ELECTRONIC MUSICAL INSTRUMENT PRODUCING PIANO EFFECTS  
3440324 ELECTRIC ORGAN AND PROPORTIONAL KEYING SYSTEM THEREFOR  
3439569 ELECTRICAL MUSICAL INSTRUMENT  
3436466 COUPLER SYSTEM FOR ELECTRONIC ORGANS  
3291886 Transient tone signal circuits  
3288905 Electronic multi-source sound pattern  
3247306 Keyer circuit  
3246071 Electronic organ  
3244790 Percussion circuit utilizing a singlepole key switch  
3196201 Transistor keyer  
3170020 Apparatus for producing bass sounds in electric musical instruments wherein contrabass voice can be obtained by special switch and circuit  
3048792 Tone generator with selective switching means  
2930003 Transistorized harmonic generator  

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