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| Number | Title | Issue Date |
| 4174652 | Method and apparatus for recording digital signals for actuating solenoid There is disclosed a method and apparatus for recording digital signals subsequent re-creation of a musical performance from the keyboard of an electronic player piano, wherein the notes are given a stretched effect before recording so as to eliminate the... | 11/20/1979 |
| 4160404 | Electronic musical instrument An electronic musical instrument comprising a plurality of tone forming systems having mutually different tone production modes. One of such tone forming systems can produce a tone continuously while another of such systems can produce a tone intermittent... | 07/10/1979 |
| 4157049 | Organ performance supporting device An organ performance supporting device which has means for detecting ON signals of actuating switches of combination units to provide control code signals, means for setting signals indicating the individual operative states of the switches by the switch-... | 06/05/1979 |
| 4154133 | Envelope waveform generating apparatus An envelope waveform generating apparatus comprising a key code generating device composed of a means for releasing key code data and a means for outputting first and second control signals, a key assignor composed of a means for outputting a third contro... | 05/15/1979 |
| 4135428 | Circuit for controlling the expression of an electronically controlled keyboard instrument There is disclosed a circuit for controlling the expression of an electronically controlled keyboard instrument and is an improvement on the circuit disclosed in application Ser. No. 680,996. The circuit works on the principle that by switching a solenoid... | 01/23/1979 |
| 4121490 | Touch responsive electronic piano A keyboard operated polyphonic tone synthesizer which is touch responsive to the force applied to the keyboard mechanism. Operation of a key operates through a pneumatic transducer to provide an air stream having a velocity proportional to the force appli... | 10/24/1978 |
| 4116103 | Pulse width modulation in a digital tone synthesizer In a digital tone synthesizer, musical tones are created by evaluating a generalized Fourier transform of harmonic coefficients. Tones corresponding to pulse-like waveshapes are simulated by using harmonic coefficient values associated with a pulse wavesh... | 09/26/1978 |
| 4109208 | Waveform producing system In a waveform producing system for use in, for example, an electronic musical instrument, a tone generator circuit and/or a tone control circuit including tone keyer circuits, each or either one of said tone generator circuit and said tone control circuit... | 08/22/1978 |
| 4085646 | Electronic musical instrument An electronic musical instrument providing continuous cybernetic tone finding controlled by functions of the human mouth. The instrument includes a mouthpiece into which air is to be blown from the mouth of a player having a measuring apparatus at least p... | 04/25/1978 |
| 4083283 | Electronic musical instrument having legato effect An electronic musical instrument is of a type wherein an envelope to be imparted to a musical tone is stored in a memory as its sampled values and sequentially read out to constitute an envelope shape. A key depression causes the read-out of the memory. T... | 04/11/1978 |
| 4082028 | Sliding overtone generation in a computor organ Sliding overtone generation is implemented in a computor organ of the type disclosed in U.S. Pat. No. 3,809,786. In such an instrument, the sampled amplitudes of a musical waveshape are computed in real time by individually calculating the amplitude contr... | 04/04/1978 |
| 4080862 | Electronic musical instrument having octave slide effect An electronic musical instrument wherein, by merely depressing one key, the tone pitch corresponding to that key varies periodically with cyclic repetition at a specific rate. The pitch variation is made on the octave basis by periodically shifting digits... | 03/28/1978 |
| 4033219 | Touch responsive control system for a keyboard electronic musical instrument Touch responsive control of note amplitude and harmonic content is achieved by providing each key with a touch responsive transducer. A set of attack/decay scale factors are accessed sequentially from a memory and used to establish the amplitude envelope ... | 07/05/1977 |
| 3979989 | Electronic musical instrument In a digital type electronic musical instrument in which frequency information corresponding to a depressed key is cumulatively counted and a musical tone waveshape is read from a memory by the resultant output of the cumulative counting, modified frequen... | 09/14/1976 |
| 3972259 | Production of pulse width modulation tonal effects in a computor organ In a computor organ, musical tones are generated by separately evaluating the constituent Fourier components of a musical waveshape and summing these to obtain the waveshape sample point amplitudes. The relative amplitude contribution of each Fourier comp... | 08/03/1976 |
