Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1993-04-29
1994-07-19
Sikes, William L.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307490, 328104, 328127, 328167, H03B 104, H04B 110
Patent
active
053312228
ABSTRACT:
A parallel dilating-filters switched-capacitor filter bank is described in simulation of the cochlea. Area-saving is achieved by filter-sharing, effective sum-gain amplifier designs, and using area efficient nth-order filter designs, and in particular using a biquadratic filter design using charge-differencing. The structure is easily expandable to include more channels by extending with additional filters and output amplifiers, or by using several chips with different sampling frequencies in parallel connection. An offset-compensated area-efficient switched-capacitor sum-gain amplifier circuit design is described and can be used in the filter bank.
REFERENCES:
patent: 3639842 (1972-04-01), Zacone et al.
patent: 4446438 (1984-05-01), Chang et al.
patent: 4543534 (1985-09-01), Temes et al.
patent: 4626808 (1986-12-01), Nossek
patent: 4894620 (1990-01-01), Nagaraj
patent: 5168179 (1992-12-01), Negahban-Hagh
patent: 5182521 (1993-01-01), Chang et al.
Lin et al. "Realization of Cochlear Filters By VLT Switched-Capacitor Biquads", Mar. 1992, pp. 1-4, IEEE Intn'l Conf. on Acoustics.
Edwards Thomas G.
Lin Jyh-fong
Shamma Shihab A.
Le Dinh
Sears Christopher N.
Sikes William L.
University of Maryland
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