Fractional Sampling using the Asynchronous Shah with application to LINEAR PHASE FIR FILTER DESIGN

سند علمی

Fractional Sampling using the Asynchronous Shah with application to LINEAR PHASE FIR FILTER DESIGN

چکیده

We investigate the fundamental process of sampling using an impulse train, called the shah function [Bracewell], that is skewed in time by a constant offset relative to absolute time 0. We observe that when an originating analog signal is bandlimited, there is little difference between fractionally timeshifting the corresponding sequence, and synchronously sampling the time-shifted analog signal. We use these results to explain a curious parallel in the theoretical analysis of Types II and IV linear phase FIR (finite impulse response) filters that is manifest by an apparent 4π-periodicity in the "generalized" [O&S] linear amplitude and phase.

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Fractional Sampling using the Asynchronous Shah with application to LINEAR PHASE FIR FILTER DESIGN

چکیده

اسناد مشابه

Weighted Mean Squared Error Criterion with Fixed-level Modification for Linear-phase Fir Filter Design*

Efficient and Accurate Optimal Linear Phase FIR Filter Design Using Opposition-Based Harmony Search Algorithm

Fast algorithm for least squares 2D linear-phase FIR filter design

A Novel Firefly Algorithm for Optimal Linear Phase FIR Filter Design

Efficient and Accurate Optimal Linear Phase FIR Filter Design Using Opposition-Based Harmony Search Algorithm

Comparative Study of Target Function Definition in Linear Phase FIR Filter Design