Method for amplifying multiplexed signals through different gain

Communications: electrical – Audible indication – Percussion-type sound producer

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340347M, 340347R, 367 67, H03K 1302

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044491204

ABSTRACT:
A method for amplifying multiplexed signals including the steps of amplifying each signal in different amplifiers, each having different amplification gains, selecting the amplified signal of optimum amplitude and digitizing the selected amplified signal wherein the selection is operated by a previous measuring of the digitized value of the signal, without amplification, considered as a reference signal.

REFERENCES:
patent: 3449685 (1969-06-01), Holmes
patent: 3685047 (1972-08-01), Sherer et al.
patent: 3754240 (1973-08-01), Milton
patent: 4069479 (1978-01-01), Carpenter et al.
patent: 4211999 (1980-07-01), Clark et al.
Blesser, Digitization of Audio: A Comprehensive Examination of Theory . . . , Journal of the Audio Engineering Society, 10/1978, vol. 26, No. 10, pp. 739-749.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, p. I-6.

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