Electronic keyboard musical instrument capable of imparting effe

Details Electronic keyboard musical instrument capable of imparting effe Electronic keyboard musical instrument capable of imparting effe

1997-04-22

1998-11-03

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84627, 84663, 84DIG9, G10H 1057, G10H 704

Patent

active

058311947

ABSTRACT:
An electronic keyboard musical instrument is responsive to a step-on of a soft pedal so as to impart effects similar to those of a soft pedal of an acoustic piano to an electronic sound; a tone generator incorporated in the electronic keyboard musical instrument causes a series of waveform data codes to be read out at a higher speed so as to slightly increase the pitch of an electronic sound, an envelop generator to give a gentle envelop with a small attack and a long sustain to the electronic sound and a filter circuit to emphasize a certain high frequency component, thereby making the electronic sound to be quite close to the piano sound produced under the step-on of the soft pedal.

REFERENCES:
patent: 4909121 (1990-03-01), Vsa et al.
patent: 5136916 (1992-08-01), Shibukawa
patent: 5241130 (1993-08-01), Shibukawa
patent: 5498834 (1996-03-01), Inagaki et al.
patent: 5641929 (1997-06-01), Okamoto et al.

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