decimate

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

Function Synopsis

odata = decimate(idata,r,nfilt,option)

Help text

DECIMATE Resample data at a lower rate after lowpass filtering.
	Y = DECIMATE(X,R) resamples the sequence in vector X at 1/R
	times the original sample rate.  The resulting resampled
	vector Y is R times shorter, LENGTH(Y) = LENGTH(X)/R.
	DECIMATE filters the data with an eighth order Chebyshev
	type I lowpass filter with cutoff frequency .8*(Fs/2)/R,
	before resampling.
	Y = DECIMATE(X,R,N) uses an N'th order Chebyshev filter.
	Y = DECIMATE(X,R,'FIR') uses the 30 point FIR filter
	generated by FIR1(30,1/R) to filter the data.
	Y = DECIMATE(X,R,N,'FIR') uses the N-point FIR filter.
	See also INTERP.

Cross-Reference Information

abs            /tools/hpmatlab/toolbox/matlab/elfun/abs.m
ceil           /tools/hpmatlab/toolbox/matlab/elfun/ceil.m
cheby1         /tools/hpmatlab/toolbox/signal/cheby1.m
disp           /tools/hpmatlab/toolbox/matlab/general/disp.m
else           /tools/hpmatlab/toolbox/matlab/lang/else.m
elseif         /tools/hpmatlab/toolbox/matlab/lang/elseif.m
end            /tools/hpmatlab/toolbox/matlab/lang/end.m
eps            /tools/hpmatlab/toolbox/matlab/elmat/eps.m
error          /tools/hpmatlab/toolbox/matlab/lang/error.m
filter         /tools/hpmatlab/toolbox/matlab/datafun/filter.m
filtfilt       /tools/hpmatlab/toolbox/signal/filtfilt.m
fir1           /tools/hpmatlab/toolbox/signal/fir1.m
fix            /tools/hpmatlab/toolbox/matlab/elfun/fix.m
grpdelay       /tools/hpmatlab/toolbox/signal/grpdelay.m
i              /tools/hpmatlab/toolbox/matlab/elmat/i.m
if             /tools/hpmatlab/toolbox/matlab/lang/if.m
input          /tools/hpmatlab/toolbox/matlab/lang/input.m
length         /tools/hpmatlab/toolbox/matlab/general/length.m
max            /tools/hpmatlab/toolbox/matlab/datafun/max.m
nargin         /tools/hpmatlab/toolbox/matlab/elmat/nargin.m
return         /tools/hpmatlab/toolbox/matlab/lang/return.m
round          /tools/hpmatlab/toolbox/matlab/elfun/round.m
size           /tools/hpmatlab/toolbox/matlab/general/size.m
zeros          /tools/hpmatlab/toolbox/matlab/elmat/zeros.m