You can use LabWindows/CVI to perform Discrete Fourier Transforms (DFT), Fast Fourier Transforms (FFT), basic signal analysis computations, computations on power spectra, and FFT-based calculations for network analysis.
The LabWindows/CVI Advanced Analysis Library includes the following frequency analysis functions:
| Function | Description |
|---|---|
| ChirpZT | Calculates the z transform along a spiral in the z-plane at the specified points. |
| CreateFFTTable | Creates a reusable FFT table. |
| CrossSpectrum | Calculates the double-sided cross power spectrum of the input sequences. |
| CxChirpZT | Calculates the z transform along a spiral in the z-plane at the following points. |
| CxFFT2D | Computes the 2D Fast Fourier Transform (FFT) of a complex time-domain signal. |
| CxFFTEx | Calculates the 1D Fast Fourier Transform (FFT) of a complex time-domain signal. |
| CxInvFFT2D | Computes the complex 2D inverse Fast Fourier Transform (FFT) of a signal. |
| CxInvFFTEx | Computes the complex inverse Fast Fourier Transform (FFT) of an input sequence. |
| DCT | Computes the one-dimensional Discrete Cosine Transform (DCT) of the input sequence. |
| DCT2D | Computes the two-dimensional Discrete Cosine Transform (DCT) of a matrix. |
| DestroyFFTTable | Frees the resources used by an FFT table. |
| DST | Computes the one-dimensional Discrete Sine Transform (DST) of an input sequence. |
| DST2D | Computes the two-dimensional Discrete Sine Transform (DST) of a matrix. |
| FastHilbertTransform | Computes the Fast Hilbert Transform of the input sequence. |
| FFT2D | Computes the Fast Fourier Transform (FFT) of a 2D time-domain signal. |
| FFTEx | Computes the Fast Fourier Transform (FFT) of a real time-domain signal. |
| FHT | Calculates the Fast Hartley Transform (FHT). |
| InvDCT | Computes the one-dimensional inverse Discrete Cosine Transform (DCT) of the input sequence. |
| InvDCT2D | Computes the two-dimensional inverse Discrete Cosine Transform (DCT) of the input signal. |
| InvDST | Computes the one-dimensional inverse Discrete Sine Transform (DST) of the input signal. |
| InvDST2D | Computes the two-dimensional inverse Discrete Sine Transform (DST) of the input signal. |
| InvFastHilbertTransform | Computes the inverse Fast Hilbert Transform of the input sequence. |
| InvFFT2D | Computes the real two-dimensional inverse Fast Fourier Transform (FFT) of the input signal. |
| InvFFTEx | Computes the real inverse Fast Fourier Transform (FFT) of an input sequence. |
| InvFHT | Calculates the inverse Fast Hartley Transform (FHT). |
| Spectrum | Calculates the power spectrum of the input array. |