Simulink Control Design™ - MathWorks

fselect

Extract sinestream signal at specified frequencies

Syntax

input2 = fselect(input,fmin,fmax)

input2 = fselect(input,index)

Description

input2 = fselect(input,fmin,fmax) extracts a portion of the sinestream input

signal input in the frequency range between fmin and fmax. Specify fmin and fmax in

the same frequency units as the sinestream signal.

input2 = fselect(input,index) extracts a sinestream signal at specific

frequencies, specified by the vector of indices index.

Examples

Extract the second frequency in a sinestream signal:

% Create the input signal

input = frest.Sinestream('Frequency',[1 2.5 5],...

'Amplitude',[1 2 1.5],...

'NumPeriods',[4 6 12],...

'RampPeriods',[0 2 6]);

% Extract a sinestream signal for the second frequency

input2 = fselect(input,2)

% Plot the extracted input signal

plot(input2)

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