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Digital filtering via block recursion

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2 Author(s)
Voelcker, H.B. ; University of Rochester, Rochester, N.Y. ; Hartquist, E.

Digital filters which have poles in their transfer functions are usually implemented by various direct feedback arrangements. Such filters can also be synthesized in a form amenable to implementation via the FFT. The key feature of this procedure is block feedback through a special finite-response filter. Although the procedure appears to offer few immediate practical advantages, its asymptotic properties are interesting. It also provides a useful conceptual link between recursive and nonrecursive filtering techniques.

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Audio and Electroacoustics, IEEE Transactions on  (Volume:18 ,  Issue: 2 )