Music – Instruments
Patent
1975-10-07
1977-03-22
Witkowski, Stanley J.
Music
Instruments
84 125, 307261, 307265, 328 13, 328150, 328158, 328260, G10H 100, G10H 500
Patent
active
040129810
ABSTRACT:
A waveform converter for use with an electronic musical instrument comprises an input for receiving a sawtooth wave tone signal, an output for delivering a rectangular wave tone signal, a semiconductor active element adapted to switch the output voltage from a first to a second voltage level when the input voltage exceeds the threshold voltage level of the waveform converter, and a variable bias source coupled to the input for controlling the duty factor of the rectangular wave output tone signal. The variable bias source includes a variable D.C. voltage source and a subaudio sine wave source.
REFERENCES:
patent: 3715445 (1973-02-01), Kniepkamp
patent: 3767833 (1973-10-01), Noble et al.
patent: 3828110 (1974-08-01), Colin
patent: 3886834 (1975-06-01), Okamoto
patent: 3886836 (1975-06-01), Hiyoshi
patent: 3897709 (1975-08-01), Hiyoshi et al.
patent: 3902392 (1975-09-01), Nagahama
patent: 3902396 (1975-09-01), Hiyoshi
patent: 3922943 (1975-12-01), Niinomi
Millman & Taube, "Pulse, Digital, and Switching Waveforms" Copyright 1965 by McGraw-Hill, Inc. Library of Congress Catalog Card No. 64-66293. pp. 389-402.
Nippon Gakki Seizo Kabushiki Kaisha
Witkowski Stanley J.
LandOfFree
Electronic musical instrument provided with a waveform converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic musical instrument provided with a waveform converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic musical instrument provided with a waveform converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1950331