Circuit for the fast calculation of the discrete Fourier transfo

Details Circuit for the fast calculation of the discrete Fourier transfo Circuit for the fast calculation of the discrete Fourier transfo

1983-02-18

1986-12-16

Thomas, James D.

Boots, shoes, and leggings

G06F 734, G06F 1535

Patent

active

046302298

ABSTRACT:
A circuit for the rapid calculation of the real and imaginary parts of the h first harmonics of a signal supplied by a measuring device and particularly for the analysis of the voltage supplied by a non-destructive eddy current testing probe. The circuit comprises an analog-digital converter, a random access memory, and calculating means comprising a PROM, a counter, a multiplier, an accumulator and a sequencer.

REFERENCES:
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patent: 4328555 (1982-05-01), Nussbaumer
patent: 4334273 (1982-06-01), Ikeda
patent: 4479229 (1984-10-01), Wolter
Stearns, Digital Signal Analysis, pp. 50-71, Hayden Book Company Inc., Rochelle Park, N.J., 1975.
Stearns, Digital Signal Analysis, pp. 265-268, Hayden Book Company Inc., Rochelle Park, N.J., 1975.

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