Method and network configuration for attaining a continuous vari

Details Method and network configuration for attaining a continuous vari Method and network configuration for attaining a continuous vari

1992-05-22

1993-08-03

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

052335488

ABSTRACT:
A method and network configuration attain a continuous variation in the transfer function of an adaptive recursive network having multi-port subnetworks associated with parameters of the network, for processing discrete-time signals upon continuous variations in the parameters. The multi-port subnetworks are represented by elementary subnetworks being isolated with respect to the parameters. Each elementary subnetwork has parameters which can assume values in a given total value range being represented by a differently structured elementary subrange network being associated with adjacent value ranges of the respective parameter and having a transfer function varying continuously upon continuous variations in the parameter. A switchable inverter and elementary subnetworks having parameters which can only assume values in a range of the given total value range, are optionally represented by a combined subnetwork. The elementary subnetworks include first and second two-port adaptors each having first and second inputs and first and second outputs. A first adder is connected to the first and second inputs. A second adder is connected to the first input and the second output. A third adder is connected to the second input and the first output. A multiplier is connected between the output side of the first adder and the input sides of the second and third adders. The input side of the first adder of the first two-port adaptor is inverted with respect to the first input, and the input side of the third adder of the second two-port adaptor is inverted with respect to the multiplier.

REFERENCES:
patent: 3919671 (1975-11-01), Fettweis et al.
patent: 3967099 (1976-06-01), Fettweis
patent: 4061905 (1977-12-01), Fettweis
IEEE Transactions on Circuits and Systems, vol. CAS-32, No. 1, Jan. 1985, pp. 68-88, New York, U.S.; L. Gazsi: "Explicit Formulas for Lattice Wave Digital Filter".
Circuit Theory and Design,--Proceedings of the 1981 European Conference on Circuit Theory and Design, Aug. 25-28, 1981, pp. 1052-1057, The Hague, NL; L. Gazsi: "Hardware Implemantation of Wave Digital Filters Using Programmable Digital Signal Processors".
IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-23, No. 6, Dec., 1975; Alfred Fettweis: "On Adaptors for Wave Digital Filters", pp. 516-525.

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