Filter Analysis With Matlab
Digital
freqz - Frequency response of digital filter
phasez - Phase response of digital filter
impz - Impulse response of digital filter
stepz - Step response of digital filter
zplane - Zero-pole plot
fvtool - Open Filter Visualization Tool
Analogue
freqs - Frequency response of analog filters
tf2ss - Convert transfer function filter parameters to state-space form
ss2zp - Convert state-space filter parameters to zero-pole-gain form