FOSSEE Signal Processing Toolbox

• ac2poly — Convert autocorrelation sequence to polynomial of prediction filter
• ac2rc —
• arParEst —
• arburg — This function calculates coefficients of an autoregressive (AR) model of complex data.
• arcov —
• armcov —
• aryule — This function fits an AR (p)-model with Yule-Walker estimates.
• barthannwin — This function returns the filter coefficients of a modified Bartlett-Hann window.
• bartlett — Generates a Bartlett window
• besself — This function generates a Bessel filter.
• bitrevorder —
• blackman — Generates a Blackman window
• blackmanharris — This function returns the filter coefficients of a Blackman-Harris window.
• blackmannuttall — This function returns the filter coefficients of a Blackman-Nuttall window.
• bohmanwin — This function returns the filter coefficients of a Bohman window.
• boxcar — This function returns the filter coefficients of a rectangular window.
• buffer — This function buffers the given data into a matrix of signal frames
• butter — This function generates a Butterworth filter.
• buttord — /This function computes the minimum filter order of a Butterworth filter with the desired response characteristics.
• cconv — [nargout,nargin]=argn();
• cell2sos — Converts a cell array to a second order section matrix
• cheb1ord — This function computes the minimum filter order of a Chebyshev type I filter with the desired response characteristics.
• cheb2ord — This function computes the minimum filter order of a Chebyshev type II filter with the desired response characteristics.
• chebwin — This function returns the filter coefficients of a Dolph-Chebyshev window.
• cheby1 — This function generates a Chebyshev type I filter with rp dB of passband ripple.
• cheby2 — This function generates a Chebyshev type II filter with rs dB of stopband attenuation.
• check — funcprot(0);
• chirp — This function evaluates a chirp signal at time t.
• clustersegment — This function calculates boundary indexes of clusters of 1’s.
• cmorwavf — funcprot(0);
• convmtx — n=double(n);
• corrmtx — Generate data matrix for autocorrelation matrix estimation
• cummax — Cumulative maximum
• cummin — Cumulative minimum
• db —
• db2pow —
• dctmtx —
• decimate — rhs = argn(2)
• dftmtx —
• diric —
• downsample — This function downsamples the signal by selecting every nth element.
• dutycycle —
• ellip — This function generates an elliptic or Cauer filter with rp dB of passband ripple and rs dB of stopband attenuation.
• ellipord — This function computes the minimum filter order of an elliptic filter with the desired response characteristics.
• enbw —
• eqtflength — Modifies the input vector to give output vectors of the same length
• falltime —
• fftfilt — Performs FFT-based FIR filtering using overlap-add method
• filternorm — Calculates the L-2 norm or L-infinity norm of a digital filter
• filtfilt —
• filtic —
• filtord — and denominator coefficients, a.
• firpmord — Parks-McClennan optimal FIR filter order estimation
• firtype — if (type(b)~=1) then
• flattopwin — This function returns the filter coefficients of a Flat Top window.
• fracshift — This function shifts the series x supplied as input argument by a number of samples d.
• fwhm — This function computes peak full width at half minimum or at another level of peak minimum for vector or matrix data y supplied as input.
• fwhmjlt — rhs = argn(2)
• gauspuls —
• gaussdesign — GAUSSDESIGN designs a Gaussian pulse-shaping filter which is a low pass FIR
• gaussian — This function returns a Gaussian convolution window.
• gausswin — This function returns the filter coefficients of a Gaussian window.
• gmonopuls —
• goertzel — Computes DFT using the second order Goertzel Algorithm
• grpdelay — This function computes the group delay of a filter.
• hann — This function returns the filter coefficients of a Hanning window.
• helperHarmonicDistortionAmplifier — helperHarmonicDistortionADC Helper function for HarmonicDistortionExample.m
• icceps — ICCEPS computes the inverse cepstrum of a real-valued input. This spectrum
• iirlp2mb — This function does IIR Low Pass Filter to Multiband Filter Transformation.
• impinvar — This function converts analog filter with coefficients b and a to digital, conserving impulse response.
• impz —
• impzlength — Impulse response length
• interp — function y = interp(x, q, n, Wc)
• intfilt —
• invimpinvar — This function converts digital filter with coefficients b and a to analog, conserving impulse response.
• is2rc — Convert inverse sine parameters to reflection coefficients
• isallpass — [nargout,nargin]=argn();
• isfir — [nargout,nargin]=argn();
• islinphase — [nargout,nargin]=argn();
• ismaxphase — [nargout,nargin]=argn();
• isminphase — [nargout,nargin]=argn();
• isstable — SOS matrix corresponds to [bi(1) bi(2) bi(3) ai(1) ai(2) ai(3)].
• kaiser — This function returns the filter coefficients of a Kaiser window.
• lar2rc —
• latc2tf — Convert lattice filter parameters to transfer function coefficients
• latcfilt — function [f,g,zo]=latcfilt(k,x,v,zi,dim)
• latcfilt1 — function [f,g,zo]=latcfilt1(k,v,x,zi)
• levdown —
• levin — [ar,sigma2,rc]=lev(r)
• levinson —
• lpc — Linear prediction filter coefficients
• lsf2poly — lsf2poly function convert line spectral frequencies to prediction polynomial.
• mag2db — funcprot(0);
• marcumq — This function computes the generalized Marcum Q function of order m with noncentrality parameter a and argument b.
• medfilt1 — 1D median filtering
• mexihat —
• meyeraux —
• midcross —
• modulate — Modulates signal according to the modulation method
• morlet —
• movingrms —
• musicBase — Implements the core of the MUSIC algorithm
• nnls — Non Negative Least Squares (nnls) for Ex=f with the constraint x>=0
• nuttallwin — This function returns the filter coefficients of a Blackman-Harris window.
• parzenwin — This function returns the filter coefficients of a Parzen window.
• pchip —
• pchips —
• peak2peak — funcprot(0);
• peak2rms — This function calculates the ratio of peak magnitude to the Root Mean Square(RMS) value.
• peig — Psuedospectrum using the eigenvector method.
• periodogram — funcprot(0);
• phaseInputParseAs_ab — fs=0;
• phaseInputParseAs_sos — fs=0;
• phasedelay — cas variable is 2 if sos form is involved and 1 if direct rational form is given
• phasez — cas variable is 2 if sos form is involved and 1 if direct rational form is given
• pmusic — Psuedospectrum using MUSIC algorithm
• poly2ac — Convert prediction polynomial to autocorrelation sequence.
• poly2lsf —
• poly2rc —
• polyscale — errcheck1
• polystab — This function stabilizes the polynomial transfer function.
• polyval —
• pow2db — rhs = argn(2)
• primitive — This function calculates the primitive of a given function supplied as input.
• prony —
• pulseperiod —
• pulsesep —
• pulsewidth —
• pulstran — This function generates the signal y = sum(func(t+d,...)) for each d.
• rc2ac —
• rc2is — Convert reflection coefficients to inverse sine parameters
• rc2lar —
• rc2poly —
• rcosdesign — RCOSDESIGN computes the raised cosine FIR filter
• rectpuls —
• rectwin — This function returns the filter coefficients of a rectangular window.
• resample — This function resamples in the input sequence x supplied by a factor of p/q.
• residued —
• residuez —
• risetime —
• rlevinson —
• rms — convert i/p values to their ascii values if they are of type char
• rooteig — Frequencies and power of sinusoids using eigenvector algorithm
• rootmusic — Frequencies and power of sinusoids using the root MUSIC algorithm
• rssq — This function calculates the square root of the sum of values of input vector IN.
• sampled2continuous — This function calculates the output reconstructed from the samples n supplied as input, at a rate of 1/s samples per unit time.
• sawtooth —
• schtrig — This function implements a multisignal Schmitt triggers with lev levels supplied as input.
• schurrc — narginchk(1,1,argn(2));
• seqperiod — Calculates the period of a sequence
• sgolay — This function computes the filter coefficients for all Savitzsky-Golay smoothing filters.
• sgolayfilt —
• shanwavf —
• shiftdata — Shifts data by rearranging dimensions
• slewrate —
• sos2cell — Converts a second order section matrix to a cell array
• sos2ss — [nargout,nargin]=argn();
• sos2tf — This function converts series second-order sections to direct H(z) = B(z)/A(z) form.
• sos2zp — This function converts series second-order sections to zeros, poles, and gains (pole residues).
• sosbreak — function for breaking a polynomial in second order polynomials (and an extra linear)
• sosfilt —
• specgram —
• ss2sos — not taking if, order and scale as input since they do not seem useful
• statelevels —
• stmcb — function [b,a] = stmcb( x, u_in, q, p, niter, a_in )
• strips — Plots vector or matrix in strips
• subspaceMethodsInputParser — Input parser to be used by pmusic and peig
• tf2sos — This function converts direct-form filter coefficients to series second-order sections.
• tf2zp — [z,p,k]= tf2zp(b,a);
• tf2zpk — form
• transpose — funcprot(0);
• trial_iirlp2mb — B = varargin(1)
• triang — This function returns the filter coefficients of a triangular window.
• tripuls —
• truth — y = %t
• tukeywin — This function returns the filter coefficients of a Tukey window.
• udecode — Decodes the input uniformly quantized values
• uencode — Performs uniform quantization of the input into 2^n levels
• ultrwin — This function returns the coefficients of an Ultraspherical window.
• unshiftdata — Inverts the effect of shiftdata
• upfirdn — This function upsamples the input data, applies the FIR filter and then downsamples it.
• upsample — This function upsamples the signal, inserting n-1 zeros between every element.
• upsamplefill — This function upsamples a vector interleaving given values or copies of the vector elements.
• var —
• vco — Voltage Controlled Oscillator
• welchwin — This function returns the filter coefficients of a Welch window.
• window — This function creates an m-point window from the function f given as input.
• wkeep —
• wrev —
• xcorr2 —
• zerocrossing — This function estimates the points at which a given waveform crosses the x-axis.
• zp2sos — This function converts filter poles and zeros to second-order sections.
• zplane — funcprot(0);