Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1980-07-01
1982-10-05
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
340347CC, H03K 1302
Patent
active
043530605
ABSTRACT:
The sum of an analog input signal and a positive feedback signal is applied to an A/D converter. A D/A converter device including a D/A converter and a delay device for delaying an analog feedback signal which is a signal formed by D/A converting the output of the A/D converter by one conversion operation period of the A/D converter. The positive feedback signal is formed by multiplying the analog feedback signal by a given feedback coefficient.
REFERENCES:
patent: 2927962 (1960-03-01), Cutler
patent: 3745562 (1973-07-01), Rosenbaum
patent: 3793513 (1974-02-01), Kaneko
patent: 3872434 (1975-03-01), Duvall
patent: 4107669 (1978-08-01), Tewksbury
Endoh Kenjiro
Ishizawa Yoshiyuki
Iwasaki Koji
Tanaka Masanori
Miller Charles D.
Tokyo Shibaura Denki Kabushiki Kaisha
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