fft

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

Help text

FFT	Discrete Fourier transform.
	FFT(X) is the discrete Fourier transform of vector X.  If the
 	length of X is a power of two, a fast radix-2 fast-Fourier
 	transform algorithm is used.  If the length of X is not a
 	power of two, a slower non-power-of-two algorithm is employed.
 	FFT(X,N) is the N-point FFT, padded with zeros if X has less
 	than N points and truncated if it has more.
 	If X is a matrix, the FFT operation is applied to each column.

 	See also IFFT, FFT2, IFFT2, FFTSHIFT.

Cross-Reference Information

cceps          /tools/hpmatlab/toolbox/signal/cceps.m
chebwin        /tools/hpmatlab/toolbox/signal/chebwin.m
cohere         /tools/hpmatlab/toolbox/signal/cohere.m
csd            /tools/hpmatlab/toolbox/signal/csd.m
czt            /tools/hpmatlab/toolbox/signal/czt.m
cztdemo        /tools/hpmatlab/toolbox/signal/cztdemo.m
dct            /tools/hpmatlab/toolbox/signal/dct.m
fft2           /tools/hpmatlab/toolbox/matlab/datafun/fft2.m
fftfilt        /tools/hpmatlab/toolbox/signal/fftfilt.m
freqz          /tools/hpmatlab/toolbox/signal/freqz.m
grpdelay       /tools/hpmatlab/toolbox/signal/grpdelay.m
hilbert        /tools/hpmatlab/toolbox/signal/hilbert.m
ifft           /tools/hpmatlab/toolbox/matlab/datafun/ifft.m
ifft2          /tools/hpmatlab/toolbox/matlab/datafun/ifft2.m
psd            /tools/hpmatlab/toolbox/signal/psd.m
rceps          /tools/hpmatlab/toolbox/signal/rceps.m
specgram       /tools/hpmatlab/toolbox/signal/specgram.m
spectrum       /tools/hpmatlab/toolbox/signal/spectrum.m
tfe            /tools/hpmatlab/toolbox/signal/tfe.m
xcorr          /tools/hpmatlab/toolbox/signal/xcorr.m
yulewalk       /tools/hpmatlab/toolbox/signal/yulewalk.m