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filter

(/tools/hpmatlab/toolbox/matlab/datafun/filter.m)

Function Synopsis

y = filter(b,a,x)

Help text

FILTER	Digital filter.
	Y = FILTER(B, A, X) filters the data in vector X with the
	filter described by vectors A and B to create the filtered
	data Y.  The filter is a "Direct Form II Transposed"
	implementation of the standard difference equation:

	y(n) = b(1)*x(n) + b(2)*x(n-1) + ... + b(nb+1)*x(n-nb)
	                 - a(2)*y(n-1) - ... - a(na+1)*y(n-na)

	[Y,Zf] = FILTER(B,A,X,Zi) gives access to initial and final
	conditions, Zi and Zf, of the delays.

	See also FILTFILT in the Signal Processing Toolbox.

Cross-Reference Information

This function is called by
Produced by mat2html on Wed Feb 8 12:25:18 EST 1995
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