Advanced DSP Functions
Although most users access DADiSP/AdvDSP through the dialog 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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