Patent ID: 6591682
Filing Date: 2003-07-15
Classification: G01H,G01M,G01N

Abstract:
Device for signal analysis comprising:a sampling and conversion means for forming sample values of a signal, and for digitizing the sample values; a selection unit for selecting specific sample values; an arithmetic-logic operation unit having means for combining a pair of selected specific sample values according to a defined relation and for outputting resultant values; and classification means connected to receive the resultant values from the arithmetic-logic operation unit for classifying the resultant values and producing a distribution of the resultant values, which distribution is based on distances that separate each combined pair of sample values; an evaluation unit for evaluating a distribution of said resultant values obtained from the classification means; and, computational means for determining a significant frequency value, an integral multiple of a time difference value assigned to the significant frequency value, and for determining frequency values of the integral multiple of time difference values; and wherein the evaluation unit has an evaluation means for the frequency values.