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Signal Processing Toolbox Filter Analysis abs Absolute value (magnitude). angle Phase angle. freqs Frequency response of analog filters. freqspace Frequency spacing for frequency response. freqz Compute the frequency response of digital filters. freqzplot Plot frequency response data. grpdelay Compute the average filter delay (group delay).

IIR Digital Filter Design--Classical and Direct butter Butterworth analog and digital filter design. cheby1 Chebyshev type I filter design (passband ripple). cheby2 Chebyshev type II filter design (stopband ripple). ellip Elliptic (Cauer) filter design. maxflat Generalized digital Butterworth filter design. prony Prony's method for time-domain IIR filter design. stmcb Compute a linear model using Steiglitz-McBride iteration.

Statistical Signal Processing and Spectral Analysis cohere Estimate magnitude squared coherence function between two signals. corrcoef Compute the correlation coefficient matrix. corrmtx Compute a data matrix for autocorrelation matrix estimation. cov Compute the covariance matrix. csd Estimate the cross spectral density (CSD) of two signals. pburg Estimate the power spectral density using the Burg method.

Source: www.psych.nmsu.edu

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