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Farrow Linear Fractional Delay filter


Hd = dfilt.farrowlinearfd(D)


Hd = dfilt.farrowlinearfd(D) Constructs a discrete-time linear fractional delay Farrow filter with the delay D.


Farrow linear fractional delay filter with 1/2 sample delay:

 Hd = dfilt.farrowlinearfd(0.5);
x = cos(pi/10*(0:159));
y = filter(Hd,x);
axis([0 40 -2 2]);
hold on;
stem(y(1:40),'color',[1 0 0],'markerfacecolor',[1 0 0 ]);
legend('Orignal Signal','Filtered Signal','Location','best');

For more information about fractional delay filter implementations, see the "Fractional Delay Filters Using Farrow Structures" example, farrowdemo.

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Introduced in R2011a

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