Sampled signal processing device

Details Sampled signal processing device Sampled signal processing device

1976-08-12

1978-01-03

Smith, Jerry

Boots, shoes, and leggings

364724, G06F 1534

Patent

active

040668819

ABSTRACT:
A device for performing the discrete Fourier transform on a sequence of an arbitrary number N of equally spaced signal samples. The device includes a digital filter having a transfer function: ##EQU1## Calculation coefficients sin 2.pi.r/N and cos 2.pi.r/N depend on the value of N and are calculated using the same digital filter during a starting-up operation. The values of the coefficients are stored and the device is "primed" to a particular value of N. If a different number of samples N' is subsequently needed, a new priming pass sets the device up.

REFERENCES:
patent: 3544894 (1970-12-01), Hartwell et al.
patent: 3704826 (1972-12-01), Constantin
patent: 3952186 (1976-04-01), Speiser et al.

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