Wavelet Toolbox

instdfft

Inverse nonstandard 1-D fast Fourier transform.

Syntax

[X,T] = instdfft(XHAT,LOWB,UPPB)

Description

instdfft is a general mathematical utility.

[X,T] = instdfft(XHAT,LOWB,UPPB) returns the inverse nonstandard FFT of XHAT, on a power-of-2 regular grid (not necessarily integers) on the interval [LOWB,UPPB].

Output arguments are X the recovered signal computed on the time interval T given by T = LOWB + [0:n-1]*(UPPB-LOWB)/n, where n is the length of XHAT.

Outputs are vectors of length n.

Algorithm

See nstdfft algorithm section.

Limitations

The length of XHAT must be a power of 2.

See Also
fft, ifft, nstdfft

ind2depo

intwave