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. |