How is it done, by software, or hardware? Mike Harrison wrote: On Sat, 20 Jan 2001 06:43:57 MST, you wrote: >Good day to everyone! >What is IIR filter? Infinite-Impulse Response (As opposed to Finite Impulse Response), usually a recursive filter, where part of the output is fed back into the input, so in principle an inpulse can affect the output for an infinite amount of time, if the coefficients are right (or wrong...) A FIR filter sums the output of a fixed number of samples, so an impulse will only have an effect for a finite time. = >It is a software or hardware digital filter? Yes! -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=3D= 1 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body