Method of digitally evaluating the frequency and the phase of si

Details Method of digitally evaluating the frequency and the phase of si Method of digitally evaluating the frequency and the phase of si

1990-05-29

1990-12-18

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

324 83R, 381 47, 364725, 364484, G10L 500, G01R 2500, G06F 15332

Patent

active

049792156

ABSTRACT:
A method of digitally evaluating the frequency and the phase of signals in the form of digitized samples, the method being wherein it comprises in succession:
a stage during which numbers corresponding to the samples of the signals to be analyzed are processed in order to convert them into the form of an analytic signal whose real portion coincides with said signal to be analyzed; and, in parallel therewith:
a stage of estimating the parameters to be analyzed which is performed in an overall manner on the basis of estimators and of selection criteria by working on the phase of the signal without using any operator of the Fourrier transform type of any hypothesis test either separately or simultaneously; and
a stage of estimating the differences between the real signal as taken in this way and the signal obtained from the estimated parameters, thereby making it possible to deliver data in digital form relating to the quality of the analyzed signal and to the reliability of the estimated values. The invention is applicable, in particular, to microwaves.

REFERENCES:
patent: 4644268 (1987-12-01), Malka et al.
Signal Processing, vol. 11, No. 2, Sep. 1986, pp. 169-177, Amsterdam, NL; D.R.A. McMahon et al. entitled "An Efficient Method for the Estimation of the Frequency of a Single Tone in Noise from the Phases of Discrete Fourier Transforms".
Digial Processing of Signals, Maurice Bellanger, 1984, p. 350.

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