User`s guide

Signal Concepts
3-5
Note In the block dialog boxes, the term sample time is used to refer to the
sample period, T
s
. An example is the Sample time parameter in the Signal
From Workspace block, which specifies the imported signal’s sample period.
Discrete-Time Signals in Simulink
Simulink allows you to select from among several different simulation solver
algorithms through the
Solver options controls of the Solver panel in the
Simulation Parameters dialog box. The selections that you make here
determine how discrete-time signals are processed in Simulink.
Normalized
frequency
f
n
Two cycles
per sample
Frequency (linear) of a periodic signal
normalized to half the sample rate,
f
n
= ω/π =2f/F
s
.
Angular frequency Ω Radians per
second
Frequency of a periodic signal in angular
units, Ω =2πf.
Digital (normalized
angular) frequency
ω Radians per
sample
Frequency (angular) of a periodic signal
normalized to the sample rate, ω = Ω/F
s
= πf
n
.
Term Symbol Units Notes