Finite Impulse Response
In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite duration, because it settles to zero in finite time. This is in contrast to infinite impulse response (IIR) filters, which may have internal feedback and may continue to respond indefinitely (usually decaying).
The impulse response of an Nth-order discrete-time FIR filter (i.e., with a Kronecker delta impulse input) lasts for N + 1 samples, and then settles to zero.
FIR filters can be discrete-time or continuous-time, and digital or analog.
Read more about Finite Impulse Response: Definition, Properties, Impulse Response, Filter Design, Moving Average Example
Famous quotes containing the words finite, impulse and/or response:
“Are not all finite beings better pleased with motions relative than absolute?”
—Henry David Thoreau (1817–1862)
“What is desire?—
The impulse to make someone else complete?
That woman would set sodden straw on fire.”
—Theodore Roethke (1908–1963)
“Tears are sometimes an inappropriate response to death. When a life has been lived completely honestly, completely successfully, or just completely, the correct response to death’s perfect punctuation mark is a smile.”
—Julie Burchill (b. 1960)