Electronic musical instrument having a coupler effect
US4114497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1976 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Sep 29, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H1/38
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An electronic musical instrument is of a type wherein musical tone waveforms are stored in a memory as their sampled amplitudes and sequentially and repetitively read out to constitute tone waveforms. A key depression brings forth key code in a digital representation. This key code is used for reading out frequency information from a frequency information memory. The frequency informaton is accumulated to make an address signal for reading out the waveform memory. The read out waveform is reproduced as a musical tone through a tone-color and volume control circuit. This tone-color and volume control circuit is controlled keyboard by keyboard. The key code produced upon depression of the key contains a signal representing the kind of the keyboard to which the depressed key belongs. This signal is applied to a conversion circuit and converted to a signal representative of a different kind of keyboard. The output signal of the conversion circuit operates the tone-color and volume control circuit in a manner corresponding to the keyboard designated by the converted signal while the original signal representing the kind of the keyboard of the depressed key is applied directly to the ton…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.