Music – Instruments
Patent
1976-09-29
1978-09-19
Weldon, Ulysses
Music
Instruments
84 101, 84 111, 84 119, G10H 306
Patent
active
041144970
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 tone-color and volume control circuit to operate it in a manner corresponding to the keybord of the depressed key. The manner of conversion of the signal representing the keyboard can be selected as desired. There is disclosed an example of a coupler effect between the upper and lower keyboard which can be produced by converting a signal for the upper keyboard to a signal for the lower keyboard while directly using the upper keyboard signal. Also disclosed is an example of a coupler effect between the lower keyboard and the pedal keyboard produced by converting a signal for the lower keyboard to a signal for the pedal keyboard while directly using the lower keyboard signal.
REFERENCES:
patent: 3565995 (1971-02-01), Bunger
patent: 3708602 (1973-01-01), Hiyama
patent: 3803338 (1974-04-01), Adachi
patent: 3929051 (1975-12-01), Moore
Hiyoshi Teruo
Ichikawa Kiyoshi
Isii Sigeki
Nakada Akira
Yamada Shigeru
Nippon Gakki Seizo Kabushiki Kaisha
Weldon Ulysses
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