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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