dftmtx

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

Function Synopsis

b = dftmtx(n)

Help text

DFTMTX	Discrete Fourier transform matrix.
	DFTMTX(N) is the N-by-N complex matrix of values around
	the unit-circle whose inner product with a column vector
	of length N yields the discrete Fourier transform of the
	vector.  DFTMTX(LENGTH(X))*X is the same as FFT(X).

	The inverse discrete Fourier transform matrix is
	CONJ(DFTMTX(N))/N.   See also FFT and IFFT.

Cross-Reference Information

exp            /tools/hpmatlab/toolbox/matlab/elfun/exp.m
pi             /tools/hpmatlab/toolbox/matlab/elmat/pi.m
sqrt           /tools/hpmatlab/toolbox/matlab/elfun/sqrt.m