Fourier Transform

The function Fourier Transform implements a Fast Fourier Transformation algorithm (FFT) to convert interferograms into NIR or MIR spectra. Interferograms that are acquired by the spectrometer instrument can be transformed to regular IR-spectra using this function.

The Fourier Transform command is available in the Mathematics menu.

Fourier Transform parameters

The following parameters can be adjusted:

Spectrum Type

Specifies the type of spectrum the interferogram corresponds to. Available options are:

• NIR - Interferogram corresponds to a NIR-spectrum

• MIR - Interferogram corresponds to a MIR-spectrum

Interferogram Type

Specifies the type of interferogram to be processed. Available options are:

• Single - Interferogram is of type single

• Double -  Interferogram is of type double

Spectral Range

Sets the spectral range for the resulting spectra.