Returns the step response $s[n]$ of the FIR filter.

The step response $s[n]$ is the filter output when the input is a unit step $u[n]$.

Parameters:¶

N: int | None = None¶

The number of samples to return. The default is the filter length.

Returns:¶

The step response of the FIR filter $s[n]$.

Examples

See the FIR filters example.