Nonrecursive filter
 | This article provides insufficient context for those unfamiliar with the subject. (May 2015) |
A non-recursive filter only uses input values like x[n − i], unlike recursive filter where it uses privious output values Non-recursive digital filters are often known as Finite Impulse Response (FIR) Filters as a non-recursive digital filter has a finite number of coefficients in the impulse response h[n].
Example:
y[n] = 0.5x[n − 1] + 0.5x[n].