Sampled data tone control system

Details Sampled data tone control system Sampled data tone control system

1986-09-24

1988-11-08

Harkcom, Gary V.

Boots, shoes, and leggings

36472401, G06F 738

Patent

active

047837560

ABSTRACT:
A sampled data treble control system, requiring a single multiplier element, includes the cascade connection of a first adder, the multiplier, and a second adder coupled between the system input and output terminals. A subtracter develops the differences between the system input and output signals and applies them to an Infinite Impulse Response filter. The filtered differences are scaled and coupled to the first and second adders. The system transfer function H(Z) is given by

REFERENCES:
patent: 3889108 (1975-06-01), Cantrell
patent: 4242650 (1980-12-01), Cordell
patent: 4615038 (1986-09-01), Lim et al.
Ishigaki et al., "Monolithic Filter and Its Application to TV MPX Sound Decoder IC", IEEE Trans. CE, vol. CE-29, No. 4, 9/83, pp. 475-485.
Hood, "Modular Preamplifier", Wireless World, Nov. 1982, pp. 60-64.
Digit 2000 VLSI Digital TV System, "APU 2400 Audio Processor Unit", pp. 95-110, Edition 1985/6, ITT Intermetal, Freiburg, W. Ger.
Hirata, "Simple Digital Filters for Sound Reproduction", Wireless World, Sep., 1982, pp. 77-79.
Graeme, "Applications of Operational Amplifiers", pp. 214-215, 1973, McGraw-Hill Book Co., N.Y.
Self, "Precision Preamplifier", Wireless World, Oct., 1983, pp. 31-34.

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