Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent
1991-05-29
1992-09-29
Isen, Forester W.
Electrical audio signal processing systems and devices
Noise or distortion suppression
Interpolation
381120, 330 51, H04B 1500
Patent
active
051519429
ABSTRACT:
A stabilized power supply is provided for supplying a constant voltage to an audio amplifier. There are provided two comparators, a first comparator of which compares an output voltage of the stabilized power supply with a reference value to provide a first comparator signal when the output voltage coincides with the reference value. A second comparator is provided for comparing an output bias voltage of the amplifier with the output voltage of the stabilized power supply and for producing a second comparator signal when the output bias voltage coincides with the output voltage. A NAND gate is provided to be operated by the first and second comparator signals and a mute release signal so as to stop muting operation of the circuit.
REFERENCES:
patent: 3840820 (1974-10-01), Kawada
patent: 3889202 (1975-06-01), Suzuki
patent: 3992677 (1976-11-01), Tsurushima
patent: 4005373 (1977-01-01), Salesky et al.
patent: 4181895 (1980-01-01), Yoshida
patent: 4371841 (1983-01-01), Eckert et al.
patent: 5029005 (1991-07-01), Morris, Jr.
Isen Forester W.
Pioneer Electronic Corporation
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