[Master Index] [Index for /tools/hpmatlab/toolbox/signal]

yulewalk

(/tools/hpmatlab/toolbox/signal/yulewalk.m)

Function Synopsis

[B,A] = yulewalk(na, ff, aa, npt, lap)

Help text

YULEWALK Recursive filter design using a least-squares method.
	[B,A] = YULEWALK(N,F,M) finds the N-th order recursive filter
	coefficients B and A such that the filter:
		                      -1             -(n-1) 
		   B(z)   b(1) + b(2)z + .... + b(n)z
		   ---- = ---------------------------
		                      -1             -(n-1)
		   A(z)    1   + a(1)z + .... + a(n)z

	matches the magnitude frequency response given by vectors F and M.
	Vectors F and M specify the frequency and magnitude breakpoints for
	the filter such that PLOT(F,M) would show a plot of the desired
	frequency response. The frequencies in F must be between 0.0 and 1.0,
	with 1.0 corresponding to half the sample rate. They must be in
	increasing order and start with 0.0 and end with 1.0. 

	See also FIR1, BUTTER, CHEBY, FREQZ and FILTER.

Cross-Reference Information

This function calls
Produced by mat2html on Wed Feb 8 12:25:18 EST 1995
Cross-Directory links are: ON