Engee documentation

Transformations, correlation, and modeling

arburg

The parameters of the autoregression model with all poles are the Burg method.

bitrevorder

Rearranges the input data bits in reverse order.

cceps

Comprehensive cepstral analysis.

cconv

Circular convolution modulo n.

convmtx

The convolution matrix.

corrmtx

A data matrix for estimating the autocorrelation matrix.

czt

Chirp Z-transformation.

dct

Discrete cosine transform.

dftmtx

The matrix of the discrete Fourier transform.

digitrevorder

Rearranges the digits of the input data in reverse order.

emd

Decomposition of the signal into empirical modes.

envelope

The envelope of the signal.

hilbert

Discrete analytical signal using the Hilbert transform.

idct

Inverse discrete cosine transform.

invfreqs

Determination of continuous filter parameters based on frequency response data.

invfreqz

Determination of discrete filter parameters based on frequency response data.

istft

Inverse windowed Fourier transform.

levinson

Levinson—Durbin recursion.

lsf2poly

Conversion of linear spectral frequencies into prediction filter coefficients.

poly2rc

Transformation of the prediction filter polynomial into reflection coefficients.

prony

The Prony method for designing filters.

pspectrum

Analysis of signals in the frequency and time-frequency domains.

rc2is

Conversion of reflection coefficients into arcsine parameters.

rc2lar

Conversion of reflection coefficients into parameters of the logarithmic ratio of areas.

rc2poly

Conversion of reflection coefficients into a prediction filter polynomial.

rceps

Real kepstr and minimum-phase reduction.

spectrogram

A spectrogram using the windowed Fourier transform.

stft

The windowed Fourier transform.

vmd

Decomposition by variational modes.

xcorr2

Two-dimensional cross-correlation function.