Difference between revisions of "Infinite Impulse Response Filter"
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IIR filters can be very powerful, but it can also be more difficult to design them properly (IIR filters are prone to instability for example, because they are recursive filters). | IIR filters can be very powerful, but it can also be more difficult to design them properly (IIR filters are prone to instability for example, because they are recursive filters). | ||
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Revision as of 20:39, 7 September 2006
Infinite impulse response filters are like finite impulse response filters (FIR filter), the difference lies in the fact that IIR filters use feedback, for example y(n)=0.5y(n-1)), which results in an infinite impulse response.
IIR filters can be very powerful, but it can also be more difficult to design them properly (IIR filters are prone to instability for example, because they are recursive filters).
