A Comparison of Two Techniques for the Interpolation/Extrapolation of Frequency Domain Responses

bert transform. Section 4 describes the algorithm Narayana, S., Sarkar, T. K., Adve, R., Wicks, M., and Vanused to implement this. In Section 5, a few numerical nicola, V., A Comparison of Two Techniques for the Interexamples are studied and comparisons made. polation/Extrapolation of Frequency Domain Responses, Digital Signal Processing 6 (1996), 51–67. 2. THE CAUCHY METHOD In this paper, a comparison is made between two methods which are used for interpolation/extrapolation of frequency domain responses. The first method is the direct Consider a system function H (s ) . The objective is method based on the principle of a model-based parameter to approximate H (s ) by a ratio of two polynomials estimation and the second uses the properties of discrete A (s ) and B (s ) so that H (s ) can be represented by Hilbert transforms based on the principle of causality. fewer variables. Hence, consider q 1996 Academic Press, Inc.