Apparatus for analyzing signals, to obtain parameters of constit

Details Apparatus for analyzing signals, to obtain parameters of constit Apparatus for analyzing signals, to obtain parameters of constit

1985-01-25

1988-03-08

Gruber, Felix D.

Boots, shoes, and leggings

324 77B, G01R 2300

Patent

active

047302577

ABSTRACT:
An apparatus for analyzing a signal takes the Fourier Transform of both an original signal and a shifted signal, which has previously been subjected to a shift, for example a time shift, relative to the original signal. This gives sets of first and second frequency components corresponding respectively to the original signal and the shifted signal. The arguments of at least one pair of corresponding first and second frequency components are calculated, and subtracted to give a phase difference. From this phase difference, the frequency of the corresponding constituent of the original signal can be determined. Further, having obtained the frequency, one can calculate the initial phase and amplitude of the corresponding constituent of the original signal. The signal can vary temporally or spatially.

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