DSP Blockset

Sampling

A discrete-time signal is a sequence of values that correspond to particular instants in time. The time instants at which the signal is defined are the signal's sample times, and the associated signal values are the signal's samples. Signals defined in this way are called sample-based signals. For a periodically sampled signal, the equal interval between any pair of consecutive sample times is the signal's sample period, T_s. The sample rate, F_s, is the reciprocal of the sample period, or 1/T_s. The sample rate is the number of samples in the signal per second.

Note    In the block dialog boxes, the term sample time is used to refer to the sample period, Ts.

A frame-based signal is composed of a series of samples grouped within one frame. The input frame period (T_fi) of a frame-based signal is the time interval between consecutive vector or matrix inputs to a block. Similarly, the output frame period (T_fo) is the time interval at which the block updates the frame-based vector or matrix value at the output port.

Signals

Tunable Parameters