Apparatus and method for smooth audio scaling

Details Apparatus and method for smooth audio scaling Apparatus and method for smooth audio scaling

1993-02-01

1994-02-22

Isen, Forester W.

Electrical audio signal processing systems and devices

Including amplitude or volume control

H03G 300

Patent

active

052895467

ABSTRACT:
Apparatus and method for scaling volume for a multimedia computer system are disclosed. A volume control algorithm, in association with the computer system hardware, increases or decreases the perceived volume over time. The increase or decrease in volume being scaled to correspond to the logarithmic nature of perceived audio transmissions. Thus, fifty percent of the maximum on a given volume scale corresponds to a human perceived half volume output.

REFERENCES:
patent: 4409682 (1983-10-01), Mori et al.
patent: 4731851 (1988-03-01), Christopher
patent: 4928569 (1990-05-01), Kudo et al.
E. J. Schubert, Function Tables in Digital Control Computers, Jul. 1958, pp. 316-319.
IBM Technical Disclosure Bulletin, vol. 28, No. 3, Aug. 1985, Color Or Grey Scale Selection Circuit With Corrected D/A Converter.

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