Music – Instruments – Electrical musical tone generation
Patent
1989-10-16
1991-05-14
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84670, 84718, G10H 120, G10H 132, G10H 512
Patent
active
050145878
ABSTRACT:
Apparatus for generating an enveloped tone signal includes a digital portion for generating an alternating logical wave form at the desired frequency, and a start pulse for initiating the tone; and an analog portion responsive to the alternating logical wave form and the start pulse for creating the tone, the analog portion including a capacitor responsive to the start pulse for storing a charge and a switching device connected to the capacitor and responsive to the alternating logical wave form for repeatedly bleeding off a portion of the charge from the capacitor in synchronization with the alternating logical wave form, and a transducer connected to the capacitor for producing the enveloped tone signal.
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Shoop Jr. William M.
Sircus B.
The Quaker Oats Company
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