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5763807 Electronic music system producing vibrato and tremolo effects  
An electronic music system adapted to generate tone waves of different pitch, amplitude and duration which, when reproduced, create musical tones whose expressive qualities emulate the expressive...
5333203 Reverb and selectable tremolo and vibrato electron tube preamplifier  
A preamplifier device employing electron tubes wherein the preamplifier has tremolo/vibrato circuits independent from reverb circuits allowing continuously variable control of either tremolo or...
4909119 Musical tone control system with a pedal for adding a musical effect to a musical tone  
An electronic musical instrument for causing a tone generator to generate a musical tone corresponding to a musical performance while controlling an envelope by operation of a pedal. An...
4658692 Control circuit for shaded-pole motor  
A control circuit for shaded-pole motors used in an acoustic pulsato system for producing special musical effects. The system includes a horn-type loudspeaker connected to a shaded-pole motor...
4649786 Electronic musical instrument  
An electronic musical instrument comprises a plurality of keyboards each having a plurality of keys, a control circuit for controlling a manner of tone production, and a musical tone production...
4329902 Electronic method and apparatus for modifying musical sound  
A continuously varying electrical signal representing an original musical sound is divided at a selected mid-frequency of about 800 Hertz to provide upper and lower frequency signal bands which are...
4308428 System for electronically simulating radiation effects produced by a rotary loudspeaker  
A device for electronically simulating vibrato and tremulant effects and the radiation effects produced by a rotary loudspeaker with the aid of two loudspeakers, in which a musical tone signal is...
4306480 Electronic musical instrument  
An electronic musical instrument having a fret board and a plurality of conductive frets may be coupled to a resistance ladder of discrete resistive elements. A conductive wire or a plurality of...
4253368 Universal pulsato unit  
An improved mounting for an acoustic pulsato rotor for suppression of spurious sounds utilizes a spring bias for axial thrust between the shaft ends and bearing cups. In one form, a plurality of...
4203339 Brass keyer system for electronic organ  
A keying arrangement for electronic organs in which a tone signal consisting of a square wave having, for example, a fifty percent duty cycle is connected to the input of the keyer circuit, and the...
4189972 Electronic musical instrument of numerical value processing type  
In an electronic musical instrument of a numerical value processing type, an operation of a key causes the generation of a numerical value corresponding to the operated key and a tone having a...
4114499 Method and apparatus for securing vibrato and tremolo effects  
Method and apparatus for securing vibrato and tremolo effects in musical instruments, such as electronic organs, wherein an incoming electrical signal is separated into high and low frequency...
4064778 Frequency-deviation method and apparatus  
A carrier wave having a sub-audible frequency is modulated in amplitude by a modulating wave of a tone signal having an audible frequency, which produces a resultant modulated output signal having...
4043243 Electronic chorus and tremulant system  
This invention relates to a electronic chorus and tremulant system for an electrical musical instrument such as an electronic piano or an electronic organ. A plurality of different sub groups of...
4035582 Tremolo effect producing system  
A tremolo effect producing system comprises at least one electro-acoustic transducer such as a loudspeaker for converting an electrical audio signal to a sound, at least one acousto-electrical...
4031795 Tone signal modulation system  
Modulation systems for electrical signals representing music in which synchronous vibrato and tremolo modulations are applied to a flute signal in one channel, the vibrator being produced by a...
4030397 Electrically amplified musical instrument control apparatus  
An electrically amplified musical instrument control apparatus for combining control of a broad range of special sound effects in a single housing and enabling a musician to produce single or...
4008641 Device for modulating a musical tone signal to produce a rotating sound effect  
A device for modulating a musical tone signal to produce a rotating sound effect. A first channel is coupled to an input for a musical tone and has an amplitude modulator therein. At least two...
3999149 Modulation system  
A modulator for modulating an audio signal in response to a dc signal of adjustable level and concurrently in response to a sub-audio signal, in which the modulating signals do not appear in the...
3979991 Electronic expression device for producing tremulant effect  
An electronic expression device for producing a tremulant effect. The device has a distributor having one input terminal and a plurality of output terminals, a plurality of transmission channels...
3978421 Electrical musical instrument amplifier having improved tremolo circuit, improved reverberation control, and power reduction circuit for distortion mode operation  
An electrical musical instrument amplifier is disclosed in which a signal which has been provided by an instrument to a second one of two different preamplifiers for amplification therein is passed...
3948139 Electronic synthesizer with variable/preset voice control  
An electronic musical synthesizer generates tone signals coupled to a controllable bandpass filter and a controllable low-pass filter. A plurality of voice switches are individually selectable to...
3881387 Electronic musical instrument with effect control dependent on expression and keyboard manipulation  
Tone signals delivered from a tone source section are passed through a variable amplifier for amplitude modification and a variable filter for frequency spectrum modification. A vibrato signal...
3878472 Audio signal transmitting system  
In an audio signal transmitting system having an audio signal transferring device and a loudspeaker to reproduce audio signals, the system includes a vibrato device consisting of a charge transfer...
3842205 TREMOLO EFFECT PRODUCING ACOUSTIC FILTER SYSTEM  
The apparatus of the invention comprises a loudspeaker, preferably, having a nearly flat diaphragm, and a plurality of microphones disposed in confronting relationship to the diaphragm of the...
3842204 PULSATO GENERATION SYSTEM  
Pulsato is generated by the acoustical mixing of sounds emitted from two frequency shift channels. In one channel a musical or other signal is frequency shifted upwardly by several Hertz, and in a...
3840690 ELECTRONIC MUSICAL INSTRUMENT WITH SINGLE KEYBOARD PROVIDING SOUNDS AND EFFECTS  
An electronic sound oscillator comprising at least one electronic note generator connected to a variable frequency control means, said note oscillator being connected to the input of a frequency...
3835235 KEYBOARD TYPE ELECTRONIC MUSICAL INSTRUMENT  
A keyboard type electronic musical instrument, which is capable of producing such musical effects as tremolo and glide, is disclosed. A flexible hollow tube is provided below each key together with...
3825668 ELECTRONIC MUSICAL INSTRUMENT CAPABLE OF PROVIDING A THIRD TYPE OF MUSICAL TONES BY OPERATION OF TWO KEYBOARDS IN ADDITION TO THE ORDINARY MELODY AND CHORD TONES  
In an electronic musical instrument equipped with a first keyboard for melody performance and a second keyboard for chord performance, operation of the first keyboard is detected directly or...
3818114 DEVICE FOR CAUSING A TREMOLO OR LIKE EFFECT IN AN ELECTRONIC KEYBOARD MUSICAL INSTRUMENT  
Each of the playing keys of an electronic keyboard musical instrument is supported so as to be capable of moving back and forth besides turning up and down through a predetermined angle in the...
3812278 SPECIAL EFFECT AMPLIFIER FOR ELECTRICAL MUSICAL INSTRUMENTS  
A special feature or effect portion of an amplifier for musical instruments has circuitry combinations for generating vibrato, tremolo, fuzz and wah-wah or selective boost. The subject amplifier...
3795756 ELECTRONIC TREMOLO EFFECT PRODUCING DEVICE  
A tremolo effect producing device, wherein a frequency deviated musical sound signal the frequency of which is shifted higher or lower by as much as an extremely low frequency signal, is...
3781475 COUNTERBALANCED TWO SPEAKER ROTARY TREMOLO DEVICE  
A rotary tremolo device employs a pair of outwardly facing speakers mounted in counterbalanced relationship on a rotatable support. The speakers are respectively driven by signals derived from the...
3778525 ELECTRONIC MUSICAL INSTRUMENT WITH PHASE SHIFT TREMULANT SYSTEM  
A tremulant circuit includes cascaded phase shifting networks in right and left amplifying channels of an electronic organ. An oscillator and associated circuitry produce offset signals of...
3746774 MANDOLINE EFFECT PRODUCING CIRCUIT FOR ELECTRONIC MUSICAL INSTRUMENT  
A mandoline effect producing circuit included in an electronic musical instrument, comprising an oscillator for generating a low frequency signal corresponding to the frequency of the tremulous...
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...
3701040 ELECTRONIC MUSICAL INSTRUMENT MASTER OSCILLATOR WITH PROVISION FOR FREQUENCY CONTROL  
A master oscillator operating in the MHz range for supplying a signal suitable for providing the notes of the musical scale, the various note signals being arrived at by frequency division of the...
3699233 TREMOLO ARRANGEMENT FOR AN ELECTRONIC MUSICAL INSTRUMENT EMPLOYING FEEDBACK OF MODULATED SIGNAL TO MODULATOR INPUT  
A carrier wave having a sub-audible frequency is modulated in amplitude by a modulating wave of a tone signal having an audible frequency, thereby producing a resultant modulated output signal...
3688010 TONE MODULATION SYSTEM  
Musical tone signals in electrical form are applied to a plurality of formant filters which are tuned dynamically by player operated controls and by electronically generated control signals....
3688054 VIBRATO EFFECT PRODUCING APPARATUS USING RECIPROCATING DISPLACEMENT OF BOTH RECORD AND PLAYBACK HEADS  
A vibrato effect producing apparatus in which there are provided a running means for producing a relative motion between a magnetic recording medium, such as a magnetic tape, and tone signal...
3644657 ELECTRONIC AUDIOFREQUENCY MODULATION SYSTEM AND METHOD  
The invention is directed to modulation of the amplitude and frequency of an audiofrequency signal by passing the signal through at least two parallel channels, with phase-shifting circuitry in the...
3629484 TREMOLO EFFECT PRODUCING DEVICE  
A carrier wave having a subaudible frequency is modulated in amplitude by a modulating wave of a tone signal having an audible frequency, which produces a resultant modulated output signal having...
3609205 ELECTRONIC MUSICAL INSTRUMENT WITH PHASE SHIFT VIBRATO  
Organ or the like electronic musical instrument tones are subjected to a phase-shift vibrato utilizing a plurality of series connected stages of phase shifting, each stage comprising a capacitor...
3603714 METHOD AND SYSTEM FOR GENERATING TREMOLO EFFECTS IN ELECTRONIC MUSICAL INSTRUMENTS  
In an electronic organ having plain keys, tremolo effects or mandolin effects are obtained by a system which comprises a pulse-generating circuit of such construction as to detect lateral movements...
3562399 ELECTRONIC MUSICAL INSTRUMENT WITH MANUAL ROD CONTROLLED SPECIAL EFFECTS AS VIBRATO AND THE LIKE  
An electronic musical instrument comprising a manual keyboard for selectively switching the tones, a manually operable rod movably mounted in front of said manual keyboard and extending throughout...
3553338 MUSIC AMPLIFIER WITH TONE MODIFYING STAGE  
A music amplifier for amplifying voice or musical instrument signals has a tone-modifying stage including one or more tone modifying circuits for modifying or distorting the input signal to produce...
3543281 ELECTRONIC MUSICAL INSTRUMENT DUAL PURPOSE GATE AND KEYING CIRCUIT  
3534145 ELECTRICAL MUSICAL INSTRUMENT WITH COMBINED CONVENTIONAL REED AND ELECTRONIC TONE GENERATORS HOUSED WITHIN A SINGLE COMMON STRUCTURE  
3519724 AMPLITUDE CONTROL CIRCUIT FOR ELECTRICAL INSTRUMENTS  
3516318 FREQUENCY CHANGER EMPLOYING OPTO-ELECTRONICS  
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