realifft (MathScript RT Module Function)
Owning Class: transforms
Requires: MathScript RT Module
Syntax
c = realifft(a)
c = realifft(a, b)
c = realifft(a, b, d)
c = realifft(a, [], d)
Description
Computes the inverse fast Fourier transform (IFFT) where the output is known to be real. realifft computes the inverse discrete Fourier transform in the same manner as the Inverse FFT VI.
Inputs
| Name | Description |
|---|---|
| a | Specifies a vector or matrix. |
| b | Controls zero-padding to the signal. b is an integer and typically is a power of 2. |
| d | Specifies the dimension of a in which LabVIEW performs the IFFT. d is an integer. |
| [] | Tells LabVIEW that you want to specify a and d but not b. |
Outputs
| Name | Description |
|---|---|
| c | Returns the real inverse fast Fourier transform of a. If a is a vector, c = realifft(a) returns the original real inverse discrete Fourier transform (IDFT). If a is a matrix, c = realifft(a) returns the column-wise real IFFTs of all columns of a. c is a vector or matrix. |
Examples
A = [10, -2+2i, -2, -2-2i]
C = realifft(A, 8)