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Journal Article

Efficient Algorithms and Structures for Fractional Delay Filtering Based on Lagrange Interpolation

Authors: Franck, Andreas

Journal of the Audio Engineering Society · Volume 56 · Issue 12 · pp. 1036–1056 · December 2008

Abstract

Fractional delay filters, which allow for delays that are not aligned at samples values, are important in many signal processing algorithms. Lagrange interpolation is frequently used for this purpose in situations where delay values change frequently, because filter coefficients can be calculated from explicit formulas. The large number of algorithms for Lagrange interpolation necessitates an analysis of their computational effort. A novel structure that is efficient, scalable, and well suited for parallel hardware or software implementation is described.

Details

Publication
Journal of the Audio Engineering Society
Volume
56
Issue
12
Pages
1036–1056
Publication date
December 6, 2008
Affiliation
Fraunhofer Institute for Digital Media Technology (See document for exact affiliation information.)
Type
Journal Article