Electronic level control circuit for sound signals

Details Electronic level control circuit for sound signals Electronic level control circuit for sound signals

1990-08-06

1992-09-22

Dwyer, James L.

Electrical audio signal processing systems and devices

Including amplitude or volume control

381 98, 330264, 330285, H03G 300, H03G 500, H03G 310, H03F 318

Patent

active

051504162

ABSTRACT:
A circuit arrangement (12, 13) for the electronic level control of a sound signal includes an amplifier circuit (14), the gain of which can be controlled in dependence on a variable direct control voltage, and a voltage-adjusting stage (15) for generating the variable direct control voltage. The amplifier circuit is formed by a CMOS inverter (14), of which the supply voltage connection (21), is supplied with the variable direct control voltage, generated by the voltage-adjusting stage (15), as supply voltage for the CMOS inverter (14). The CMOS inverter (14) is operated, in dependence on the direct control voltage, below the knee-point voltage in its starting region in which the gain of the CMOS inverter (14) decreases, and additionally the dynamic output impedance of the CMOS inverter (14) increases, with decreasing direct control voltage.

REFERENCES:
patent: 3725583 (1973-04-01), Gunderson et al.
patent: 3769459 (1973-10-01), Niffenegger et al.
patent: 3904988 (1975-09-01), Hsiao
patent: 3914705 (1975-10-01), Takahashi
patent: 4069431 (1978-01-01), Kucharewski
patent: 4229668 (1980-10-01), Ebihara et al.
patent: 4345502 (1982-08-01), Jahns
patent: 4483016 (1984-11-01), Hochstein
patent: 4791382 (1988-12-01), Shiomi
patent: 4918408 (1990-04-01), Sakihama et al.

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