Music – Instruments
Patent
1981-03-03
1982-06-08
Witkowski, Stanley J.
Music
Instruments
84 11, 84 122, 84 126, G10H 1057, G10H 146
Patent
active
043333770
ABSTRACT:
A tone generation system is intended for use with an electronic musical instrument of the type wherein an audible tone is generated electronically in response to actuation of the instrument by a player. The invention generates digital signals capable of defining either the waveshape or the envelope or characteristic of a tone for each tone initiated by such player actuation the latter envelope being varied in accordance with the intensity of the player actuation initiating that tone. In the latter case, digital electronic circuits are utilized for developing a digital scaling signal S corresponding to the intensity of actuation of the instrument by the player, and a digital envelope signal which represents slopes and Y intercepts of portions of a composite waveform, viewed in an orthogonal coordinate system. These digital circuits arithmetically manipulate these scaling signals and envelope signals to give a composite output signal defining the envelope.
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Niezgoda Thomas A.
Oppenheimer Carl P.
Acoustic Standards
Witkowski Stanley J.
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