DADiSP AdvDSP Functions - Adept Scientific

DADiSP / AdvDSP Functions

Advanced DSP Module

Although most users access DADiSP/AdvDSP through the dialogue based interface DADiSP/AdvDSP includes over 20 standalone functions. The following table is a summary of each function.

Classical PSD estimation

apsd Correlation method of PSD estimation.
fftpsd Standard FFT based PSD estimation.
wpsd Welch method of periodogram averaging.

 

Misc classical PSD functions

wpxx wpsd over entire FFT range.
wpxy Cross power spectrum estimate.
wtxy Transfer function estimate.
wcoh Coherence function estimate.
wpsdseg wpsd method with specified number of segments.

 

AR parametric PSD estimation

lev Yule-Walker linear prediction using Levinson recursion.
mem Burg (maximum entropy) method of PSD estimation.
covar Covariance method of linear prediction.
arpsd Compute PSD estimate based on AR coefficients.
arpredict Linear prediction based on AR coefficients.

 

MA parametric PSD estimation

ma Moving average method of PSD estimation.
mapsd Compute PSD estimate based on MA coefficients.

 

ARMA parametric PSD estimation

lsmyw Least Squares Modified Yule-Walker ARMA calculation.
armapsd Compute PSD estimate based on ARMA coefficients.

 

Advanced FFT analysis

czt Chirp Z transform.
nfft N point FFT calculation.
zfft Zoom FFT.

 

Digital interpolation

interp Linear interpolation.
spline Cubic spline interpolation.
fsxinterp sin(x)/x bandlimited interpolation.
fzinterp Zero insertion interpolation.

 

Cepstrum analysis

rceps Real cepstrum computation.
cceps Complex cepstrum computation.
ldunwrap Cepstrum phase unwrapping.

 

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