MATLAB SIGNAL PROCESSING BLOCKSET 7 Guide de l'utilisateur télécharger pdf (Page 95)

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Deconstructing Signals

3-55

in the Indexing library (in Signal Management). Any subset of rows or columns

can be selected for propagation to a given output port.

Example: Deconstructing to Independent Signals. In the model below, a six-channel

sample-based signal (3-by-2 matrix) is deconstructed to yield three

independent sample-based signals. Two of the output signals have four

channels, and the third signal has two channels.

To build the model, make the following parameter settings:

•In Signal From Workspace, set

Signal = randn(3,2,10)

•In Multiport Selector, set:

Select = Rows

- Indices to output = {[1 2],[1 3],3}

The Indices to output setting specifies that rows 1 and 2 of the input should

be reproduced at output 1, that rows 1 and 3 of the input should be reproduced

at output 2, and that row 3 of the input should be reproduced alone at output 3.

See “Sample-Based Multichannel Signals” on page 3-11 for more about

sample-based signals.

Deconstructing a Sample-Based Multichannel Signal

into a Related Multichannel Signal

You can select a subset of channels from a multichannel sample-based signal

by using one of the following blocks in the Indexing library (in Signal

Management):

•Selector (Simulink)

•Submatrix

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 737 738

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