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| Number | Title | Issue Date |
| 4249448 | Even-odd symmetric computation in a polyphonic tone synthesizer In a musical instrument having one or more tone generators in which a plurality of data words corresponding to the amplitudes of a corresponding number of evenly spaced reference points defining the waveform of one cycle of an audio signal are transferred... | 02/10/1981 |
| 4231277 | Process for forming musical tones Data-processings for spectrum signals which express the frequency spectrum distributions of corresponding tone waveshape signals, are performed on a frequency domain. The processed spectrum signals are transformed to the corresponding tone waveshape signa... | 11/04/1980 |
| 4227433 | Electronic musical instruments An electronic musical instrument is of a waveshape memory read out type which includes a waveshape memory device for storing amplitude values at respective sampling points in one period of a new musical tone waveshape to be generated subsequent to a prese... | 10/14/1980 |
| 4205575 | Binary interpolator for electronic musical instrument A binary interpolator circuit is embodied in an electronic musical instrument for producing a relatively smooth, inaudible transition between steps of different amplitude in a stepwise advancing or decreasing waveform, such as an envelope signal for a not... | 06/03/1980 |
| 4202234 | Digital generator for musical notes In a generator of musical notes for use as an electronic organ or other instrument, particularly of keyboard type, a computer is programmed to provide control and data signals to external hardware in response to the selection of stops and keys. In respons... | 05/13/1980 |
| 4135422 | Electronic musical instrument In an electronic musical instrument wherein waveshape F(x, y) is computed and the resultant waveshape is converted to a musical tone, computation of said waveshape F(x, y) is carried out in accordance with either one of the following equations: ##EQU... | 01/23/1979 |
| 4133241 | Electronic musical instrument utilizing recursive algorithm Musical tone signals are produced in an electronic musical instrument by calculating the amplitudes at successive sample points of a complex waveshape and by delivering these calculated amplitudes one after another in time sequence. A recursive algorithm ... | 01/09/1979 |
| 4085644 | Polyphonic tone synthesizer Musical notes are produced polyphonically in a tone synthesizer or like musical instrument by computing a master data set, transferring data set to buffer memories, and repetitively converting in real time contents of memories to notes. The master data se... | 04/25/1978 |
| 4084472 | Electronic musical instrument with tone generation by recursive calculation A digital type electronic musical instrument generates a tone signal consisting of a plurality of time-varying partial tone signals each by recursive calculation. A recursive calculator is of a simplified construction by arranging the amplitude term to be... | 04/18/1978 |
| 4036096 | Musical tone waveshape generator The invention is directed to a waveshape generator capable of producing a desired waveshape by previously storing basic amplitudes obtained by sampling one period of the waveshape at a coarse interval and calculating amplitudes with a fine interval betwee... | 07/19/1977 |
