Boots – shoes – and leggings
Patent
1983-04-25
1986-02-25
Thomas, James D.
Boots, shoes, and leggings
G06F 738
Patent
active
045731357
ABSTRACT:
A digital lowpass filter having controllable gain produces a filtered digital signal by adding to the digital input signal a feedback signal produced from the filtered digital signal. The feedback signal is produced by a delay element and by a gain element including a controllable shifter. The effective gain exhibited by the digital filter can be made to have values between the discrete values produced by the shifter by changing the shifter gain as a function of time.
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L. Jackson, et al., "An Approach to the Implementation of Digital Filters", IEEE Trans. on Audio Electroacoustics, vol. AU-16, Sep. 1968, pp. 413-421 (Reprint pp. 210-218).
Berard Jr. Clement A.
Rasmussen Paul J.
RCA Corporation
Shaw Dale M.
Thomas James D.
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