Autocorrelation apparatus and method for approximating the occur

Details Autocorrelation apparatus and method for approximating the occur Autocorrelation apparatus and method for approximating the occur

1982-03-18

1983-09-06

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

128660, 128695, 324 77G, G01R 2302, G01R 1904, A61B 502

Patent

active

044031840

ABSTRACT:
A method and an apparatus for indicating in real time the occurrence of and measuring the frequency or period of the basic oscillation of a generally periodic unknown signal with statistically distributed spectral components is disclosed. Using an autocorrelation technique, the time interval from the initial peak value to the next successive peak value of the autocorrelation curve is measured and the unknown frequency or period is determined therefrom. A periodically occurring maximum of the next successive peak value is determined, and, on its appearance, a signal is produced, said signal approximating the occurrence in real time of the generally periodic signal.

REFERENCES:
patent: 3896375 (1975-07-01), Trolliet
patent: 3991365 (1976-11-01), Takeuchi
patent: 4037151 (1977-07-01), Takeuchi
patent: 4187461 (1980-02-01), Cox

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