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| Number | Title | Issue Date |
| 4246823 | Waveshape generator for electronic musical instruments In a wave shape generator of the memory reading type, a waveshape memory stores sample values of a wave each value being represented by an integral address. A coefficient memory stores coefficients for nth order interpolation. Unknown intermediate sample ... | 01/27/1981 |
| 4244259 | Electronic musical instrument with memory to store tone control information An electronic musical instrument is capable of processing, by the same processing circuit, parameter control analog information signals defining the shape of control waveforms for the modulation of musical tone signals, and analog musical tone signal gene... | 01/13/1981 |
| 4245336 | Electronic tone generator A digitized multifrequency tone generator comprising a memory having N readable word locations with each location containing an amplitude representing binary word, and with the total N binary words sequentially and collectively representing a period T | 01/13/1981 |
| 4217802 | Polyphonic digital synthesizer A polyphonic digital synthesizer which will generate a plurality of periodic signals in real time with independent control of amplitudes. A set of digital memories are at least equal in number to the periodic signals to be produced, the address of each me... | 08/19/1980 |
| 4200021 | Electronic musical instruments which form musical tones by repeatedly generating musical tone waveform elements There is provided a first waveform generator which repeatedly generates a first waveform having a relatively short period in response to a first constant parameter, a second waveform generator responsive to a second constant parameter for generating a sec... | 04/29/1980 |
| 4179972 | Tone wave generator in electronic musical instrument In an electronic musical instrument, the keys of a keyboard are divided into a plurality of groups by octaves, and a wave generator is provided with a memory for storing constants corresponding to musical tone frequencies to be generated according to the ... | 12/25/1979 |
| 4161128 | Electronic musical instrument An electronic musical instrument comprises a circuit for generating a stepwise envelope waveform which modulates a musical tone waveform signal, a detecting circuit for detecting the phase of the musical tone waveform signal where the amplitude of the mus... | 07/17/1979 |
| 4150600 | Computer organ with extended harmonics The inventive circuitry extends the harmonic content of musical tones produced by a computor organ of the type disclosed in U.S. Pat. No. 3,809,786. A memory stores values of an algebraic approximation of the summation of the amplitudes of a set of Fourie... | 04/24/1979 |
| 4145945 | Electronic musical instrument employing holographic memory An electronic musical instrument of the waveshape memory type comprises a holographic memory; including a plurality of hologram pictures each carrying information of dots which represent in binary coded notation sample values constituting musical waveshap... | 03/27/1979 |
| 4128032 | Electronic music instrument An electronic musical instrument has a plurality of tone selectors which select musical tones; a waveshape calculator which calculates a waveshape represented by amplitudes at two or more than two sampled points of one period of the selected tone and whic... | 12/05/1978 |
| 4023454 | Tone source apparatus for an electronic musical instrument A tone source apparatus is provided for an electronic musical instrument. It comprises a memory circuit which has a plurality of addresses and is so arranged that where at least one cycle of a musical tone waveform is divided into p units and a waveform i... | 05/17/1977 |
| 3982460 | Musical-tone-waveform forming apparatus for an electronic musical instrument An apparatus for forming a musical-tone waveform for an electronic musical instrument characterized in that at least one cycle of a musical-tone waveform, which it is desired be produced, is divided in amplitude by dividing lines at equal intervals and sa... | 09/28/1976 |
| 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 |
| 3977290 | Electronic musical instrument An electronic musical instrument in which a plurality of order pulse generators and a plurality of musical-tone-waveform forming circuits are connected in order to a tone-source-signal pulse generator. Interposed in each of a plurality of circuits divergi... | 08/31/1976 |
| 3962944 | Electronic musical instrument An electronic musical instrument in which a plurality of order pulse generators and musical-tone waveform forming circuits are connected in order to a tone-source-signal pulse generator. A first pulse-counter circuit and a second pulse-counter circuit are... | 06/15/1976 |
