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From: grosen@amadeus.ucsb.edu (Mark D. Grosen)
Newsgroups: comp.dsp
Subject: Re: Why do FIR filters always have odd tap counts?
Message-ID: <7725@hub.ucsb.edu>
Date: 7 Dec 90 16:59:12 GMT
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Another reason to use odd-length FIR filters is that even-length
(symmetric) FIR filters always have a zero at omega = pi (ie, 1/2
the sampling rate).  This makes them unsuitable for use as highpass
filters, but possibly better for low or bandpass filters.
Mark D. Grosen		ARPA: grosen@amadeus.ucsb.edu
Signal Processing Lab / Communications Research Lab
ECE Dept.
University of California
Santa Barbara, CA  93106