IFFTN N-Dimensional Inverse FFT

Section: Transforms/Decompositions

Usage

Computes the inverse DFT of an N-dimensional numerical array along all dimensions. The general syntax for its use is 
  y = ifftn(x)

which computes the same-size inverse FFTs for each dimension of x. Alternately, you can specify the size vector 

  y = ifftn(x,dims)

where dims is a vector of sizes. The array x is zero padded or truncated as necessary in each dimension so that the output is of size dims. The ifftn function is implemented by a sequence of calls to ifft.