idft

Real component of an inverse Discrete Fourier Transform (IDFT) function.

Syntax

idft(real, imaginary)

Argument

real: The real component of the frequency domain data.
imaginary: The imaginary component of the frequency domain data.

Example

Curve Math Vectors	Result
`x = c1.x` `y = idft(c1.y, c2.y)`	Given c1.y as the real component of the DFT of some time-domain data and c2.y as the imaginary component, a time-domain curve is created using these two frequency-domain components.

Comments

The idft function returns the real component of an inverse Discrete Fourier Transform (IDFT). real and imaginary are vectors, must have the same number of elements, and are assumed to be evenly sampled. The resultant vector has a number of elements equal to real and imaginary.

The IDFT might be complex-valued and is used to map frequency-domain data into the time domain.