Signal Toolkit - impz

Function File: [x, t] = impz (b)

Function File: [x, t] = impz (b, a)

Function File: [x, t] = impz (b, a, n)

Function File: [x, t] = impz (b, a, n, fs)

Function File: impz (…)

Generate impulse-response characteristics of the filter.

The filter coefficients correspond to the z-plane rational function with numerator b and denominator a. If a is not specified, it defaults to 1. When n is a scalar, it specifies the number of points to compute (default: determined by impzlength). When n is a vector of non-negative integers, the response is computed only at those sample indices. The sampling frequency fs (default: 1) controls the time spacing in the output t. With no output arguments, the result is plotted.

See also: freqz, zplane, stepz,impzlength.