MATLAB SIGNAL PROCESSING BLOCKSET 7 Guide de l'utilisateur télécharger pdf (Page 658)

100

101

Variable Integer Delay

5-501

Fixed Initial Conditions. The settings shown below specify fixed initial conditions.

For a fixed initial condition, the block initializes each of D samples in memory

to the value entered in the

Initial conditions parameter. A fixed initial

condition in frame-based mode can be one of the following:

•Scalar value with which to initialize every sample of every channel in

memory. For a general M-by-N input with the parameter settings below,

the block initializes five samples in memory with zeros.

•Array of size 1-by-N-by-D. In this case, you can specify different fixed initial

conditions for each channel. See the Array bullet in “Time-Varying Initial

Conditions” below for details.

Initial conditions cannot be specified by full matrices.

Time-Varying Initial Conditions. The following setting specifies a time-varying

initial condition. For a time-varying initial condition, the block initializes each

of D samples in memory to one of the values entered in the

Initial conditions

parameter. This allows you to specify a unique output value for each sample in

memory. A time-varying initial condition in frame-based mode can be specified

in the following way:

•Vector of dimensions 1-by-D. In this case, all channels have the same set of

time-varying initial conditions specified by the entries of the vector. For the

ramp input

[100; 100]' with a frame size of 4, delay of 5, and the parameter

settings below,

the block outputs the following sequence of frames at the start of the

simulation.

1 2 ... 653 654 655 656 657 658 659 660 661 662 663 ... 737 738

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MATLAB SIGNAL PROCESSING BLOCKSET 7 Guide de l'utilisateur Page 658

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