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updated 1 day ago

2-D Fast DOST Decompotion and Reconstruction by Yanwei Wang

This is the 2-D Fast DOST Decomposition and reconstruction. The computational complexity is O(NlnN) (image processing, signal processing, mathematics)

DOST_1D_CON(D_input)

DOST_1D_DEC(S_input)

DOST_2D_CON(DOST_2D_Coeff)

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updated 3 days ago

Cepstral Liftering of speech by Speech Processing

Spectral smoothing effects of low frequency cepstral liftering on log magnitude spectrum of speech (speech processing, signal processing, gui)

Callbacks_cepstral_liftering_GUI25(f,C,start_path)

[b,BNmag,cell_lifter,stitle,c]=cepstral_liftering_speech(...

[ss]=plot_speech_cursor(x,ss,curr_file,istart,graphicPane...

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updated 3 days ago

Cepstrum Aliasing by Speech Processing

Estimates the level of aliasing when finite size FFTs for the computation are used (speech processing, signal processing, gui)

Callbacks_cepstrum_aliasing_GUI25(f,C,start_path)

[c1,cell_dif,ncount]=cepstral_aliasing_speech(xin,ss,win,...

[ss]=plot_speech_cursor(x,ss,curr_file,istart,graphicPane...

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updated 3 days ago

LPC Error by Speech Processing

Shows the (flat spectrum) nature of the LPC error signal for a typical speech frame (voiced speech) (speech processing, signal processing, gui)

Callbacks_lpc_error_GUI25(f,C,start_path)

[A,G,a,r]=autolpc(x,p)

[ss]=plot_speech_cursor(x,ss,istart,fs,L,graphicPanel);

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updated 3 days ago

LPC Analysis with Varying p by Speech Processing

illustrates the matching behavior of LPC polynomial log magnitude spectrum to log magnitude of STFT (speech processing, signal processing, gui)

Callbacks_lpc_varying_p_GUI25(f,C,start_path)

[R,E,k,alpha,G]=durbin(xf,L,p,wtype)

[ss]=plot_speech_cursor(x,ss,istart,graphicPanel);

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updated 3 days ago

Narrowband/Wideband Spectra of a Speech Frame by Speech Processing

Compares and contrasts the effects of using either of two different windows (speech processing, signal processing, gui)

Callbacks_NB_WB_spectra_GUI25(f,C,start_path)

NB_WB_spectra_GUI25

[L,win1,win2]=setup_spectra(LWB,LNB,fs,wtype)

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updated 3 days ago

Spectral and phase magnitude by Speech Processing

Illustrates the impact of Spectral Magnitude and Phase on Long-Time Analysis and Synthesis of Speech (signal processing, gui)

Callbacks_phase_magnitude_GUI25(f,C,start_path)

Callbacks_phase_magnitude_GUI25(f,C,start_path)

[xin,xph,xmagn,xphr,timind]=phase_magnitude(xin,fs)

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updated 3 days ago

Plot Roots by Speech Processing

Computes and plots the roots of either an LPC polynomial or the resulting set of LSP polynomials (signal processing, gui tools)

(0:(NB-1))/Nfft * fs; end

Callbacks_plot_roots_GUI25(f,C,start_path)

[A,G,a,r]=autolpc(x,p)

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updated 3 days ago

Vowel Synthesis by Speech Processing

Synthesizes a vowel sound with a pitch frequency that linearly varies from a user-specified one (speech processing, signal processing, gui)

Callbacks_Vowel_Synthesis_GUI25(f,C)

Vowel_Synthesis_GUI25

create_pitch_period_contour.m

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updated 3 days ago

Windows Comparisons by Speech Processing

computes and compares and contrasts the time and frequency responses of 6 L-point commonly used wind (speech processing, signal processing, gui)

...

Callbacks_windows_GUI25(f,C)

gen_window(WL,M)

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updated 3 days ago

LPC Vocoder by Speech Processing

Builds an LPC vocoder, i.e., performs LPC analysis and synthesis on a speech file (speech processing, signal processing, gui tools)

Callbacks_lpc_vocoder_GUI25(f,C,start_path)

[A,G,a,r]=autolpc(x,p)

[Afile,Gfile,nframes,excx,exct]=lpc_analysis(xin,ss,es,L,...

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updated 3 days ago

Cepstrum Computation by Speech Processing

Compares conventional and analytical methods of cepstrum analysis of a finite duration speech frame (speech processing, signal processing, gui)

Callbacks_compute_cepstrum_GUI25(f,C,start_path)

[c,xhat]=compute_cep(bn,L,cepl,FS);

[ss]=plot_speech_cursor(x,ss,curr_file,istart,graphicPane...

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updated 3 days ago

Autocorrelation Pitch Detector by Speech Processing

Implements a pitch period detection algorithm using modified autocorrelation method (speech processing, signal processing, gui)

Callbacks_ac_pitch_GUI25(f,C,start_path)

ac_pitch_GUI25

b=hpf(n,fl1,fh1,fs,iplot)

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updated 3 days ago

ADPCM by Speech Processing

Implements an ADPCM coder for waveform coding of speech (speech processing, signal processing, gui)

(0:(NB-1))/Nfft * fs; end

Callbacks_adpcm_GUI25(f,C,start_path)

[P,F,R,T]=pd_spect(s,Fs,Nfft,Nwin)

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updated 3 days ago

Endpoint Detector by Speech Processing

Analyzes an audio file which contains a period of background signal, and a period of speech (speech processing, signal processing, gui)

Callbacks_endpoint_detector_GUI25(f,C,start_path)

[energy,zerocrossings,nfrm]=analysis(xin,L,R,fs)

endpoint_detector_GUI25

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updated 3 days ago

Time Domain Features by Speech Processing

Examines the behavior of a set of three time domain, short-time features (speech processing, signal processing, gui)

Callbacks_time_domain_features_GUI25(f,C,start_path)

time_domain_features_GUI25

pathnew_matlab_central.m

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updated 3 days ago

Mu Law Quantizer by Speech Processing

Illustrates the impact of mu-law companding (compressing and expanding) and quantization of a speech (speech processin, signal processing, gui)

(0:(NB-1))/Nfft * fs; end

Callbacks_mu_law_quantize_GUI25(f,C,start_path)

[P,F,R,T]=pd_spect_U(s,Fs,Nfft,Nwin)

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updated 3 days ago

Sample rate conversion by Speech Processing

converts the sampling rate of an existing speech or audio file from its current sampling rate (signal processing, gui)

Callbacks_SRC_GUI25(f,C,start_path)

SRC_GUI25

srconv(x,fsin,fsout)

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updated 3 days ago

Rosenburg Glottal Pulse by Speech Processing

Computes the discrete-time Rosenberg glottal pulse approximation in the time and frequency domains (speech processing, signal processing, gui)

Callbacks_glottal_pulse_GUI25(f,C)

glottal_pulse_GUI25

vowel_ir(fmts,bandwidths,fs)

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updated 3 days ago

Three Tube Vocal Tract by Speech Processing

This exercise computes the frequency response of a three-tube model of a human vocal tract. (signal processing, speech processing, gui)

Callbacks_Three_Tube_VT_GUI25(f,C)

Three_Tube_VT_gui25

[fr,vm,vmins,vmaxs,v]=three_tube_model_pt2(rG,rL,l1,l2,l3...

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updated 3 days ago

Waveform Similarity and Overlap Add (WSOLA) for Speech and Audio by Speech Processing

implements the WSOLA method of Verhelst and Roelands for for High Quality Time-Scaled speech (speech processing, signal processing, gui)

Callbacks_WSOLA_GUI25(f,C,start_path)

WSOLA_GUI25

[y,yn]=record_speech(fs,nsec)

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updated 3 days ago

Log Harmonic Product Spectrum by Speech Processing

Plots a sequence of frames of both HPS and LHPS (speech processing, signal processing, gui)

Callbacks_log_harmonic_GUI25(f,C,start_path)

[ss]=plot_speech_cursor(x,ss,curr_file,istart,graphicPane...

b=hpf(n,fl1,fh1,fs,iplot)

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updated 3 days ago

Formant Estimation by Speech Processing

Illustrates an algorithm for estimating the locations of the formants of voiced speech intervals (speech processing, signal processing, gui)

Callbacks_formant_estimation_GUI25(f,C,start_path)

[A,G,a,r]=autolpc(x,p)

[Fmc,startsav,endsav]=extend_runs(nrun,startsav,endsav,nf...

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updated 3 days ago

Isolated Digits Record by Speech Processing

Implements a speaker trained, template-based, isolated digit recognizer (speech processing, signal processing, gui)

Callbacks_dtw_isolated_digits_GUI25(f,C)

[distance,paths,distances]=dtw_backtrack_dist(cref,nref,c...

[y,fs,bits,fmt]=loadwav(name)

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updated 3 days ago

Composite Vocal Tract by Speech Processing

Illustrates vocal tract response, glottal pulse, radiation response for voiced and unvoiced speech (speech processing, signal processing, gui)

Callbacks_composite_vocal_tract_GUI25(f,C)

[peakl,peakh]=findpeak(vm,f,peak,bwlevel)

composite_vocal_tract_GUI25

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updated 3 days ago

Filter Signal by Speech Processing

Design a filter where an existing speech or audio signal using user-designed LPF, HPF or BPF (speech processing, signal processing, gui)

Callbacks_filter_GUI25(f,C,start_path)

Dinfinity( deltap,deltas )

fK( deltap,deltas )

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updated 3 days ago

Ideal Vocal Tract by Speech Processing

Illustrates effect of using periodic excitation for glottal input signal on a set of speech frames (speech processing, signal processing, gui)

Callbacks_ideal_vocal_tract_GUI25(f,C)

ideal_vocal_tract_GUI25

pathnew_matlab_central.m

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updated 5 days ago

2D Fourier Transform of a cosine pulse using MATLAB inbuilt 2D FFT2 function. by Sathyanarayan Rao

Two dimensional cosine pulse and its Fourier transform is computed and visualized. (2d fft, 2d fourier transform, single sided frequenc...)

cosine_2d.m

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updated 6 days ago

Permutation Conditional Mutual Information (PCMI) by Gaoxiang Ouyang

Estimation of a directionality index between two time series (conditional mutual in..., directionality index, information flow)

CMI_PE_tau(X,Y,ord,t,Tau)

PCMI_demo.m

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updated 7 days ago

Uncoded and Turbo Coded OFDM by Ashish Meshram (Meet)

This submission implements Uncoded and Turbo Coded OFDM (ofdm, turbo encoder, turbo decoder)

AddCyclicPrefix(x,N)

Bits2Symbol(x,modtype)

CommChannel(data,chantype,M,EbNo,param)

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updated 7 days ago

RegularizeData3D by Jamal

Produces a smooth surface from scattered 3D input data. (3d data, regularizing, approximation)

RegularizeData3D(x,y,z,xnodes,ynodes,varargin)

TestRegularizeData3D_Bicubic_vs_Bilinear.m

TestRegularizeData3D_Coarse_v_Fine_Output_Grids.m

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updated 7 days ago

Sound analysis with Matlab Implementation by Hristo Zhivomirov

Time and frequency analysis, measurement of the crest factor, the dynamic range, etc. (signal processing, measurement, sound analisys)

Sound_Analysis.m

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updated 7 days ago

Golay Codes Correlator by Prem Nerella

Golay code generator/correlator designed for IEEE 802.11ad PHY receiver (golay codes, ga128, gb128)

GolayCorrelator(InpSeq, CodeLen, varargin)

GolayCorrelator_GUI(varargin)

ring_buffer(rb, dataIn, size, mode)

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updated 17 days ago

Automatic enveloping, variance change and activity detection with Hilbert Transform by Hooman Sedghamiz

Automatic Signal Segmentation and activity detection with Hilbert Transform and smoothing. (hilbert transform, signal segmentation, activity detection)

envelop_hilbert_v2(y,Smooth_window,threshold_style,DURATI...

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updated 17 days ago

PCA Based Face Recognition System Using ORL Database by Shujaat Khan

This Package implements 'Eigenface' PCA based face recognition technique. (appearance based face..., eigenface, face recognition)

Image_Projection(T,M,Eigenfaces )

PCA_Core(Tr,M,dimensions)

PCA_NEW(Tr,Ts,TrNum,TsNum,dimensions,sno)

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updated 17 days ago

RViewer by Tony Davis

Image Viewer with Interpolation on Zoom, Multiple Sync (image, display, interpolation)

rview

rviewer

Contents.m

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updated 19 days ago

Normalize columns of matrix to unit lenght by Kamlesh Pawar

Usage : Takes 2D-matrix x and returns y such that each columns of y have unit length (signal processing, image processing, image analysis)

normalize_column(x)

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updated 19 days ago

Extended DFT by Vilnis Liepins

Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. (spectral analysis, fft, dft)

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updated 20 days ago

Between numbers by HÃ¥vard Falck

Find values betwee original values in a vector (interpolation, vector, linear)

intAB.m

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updated 20 days ago

A finite cosine wavetrain and its Fourier transform by Sathyanarayan Rao

This code computes frequency spectrum of a finite cosine wavetrain using MATLAB FFT function. (fft, axis scaling for fft, cosine wavetrain)

wave_train.m

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updated 20 days ago

Flexible and Fast Spike Raster Plotting by Jeffrey Chiou

Plots spike rasters from spike times or binary trains. Faster than most implementations. (biotech, data exploration, neuroscience)

plotSpikeRaster(spikes,varargin)

testSpikeRasterPlotting.m

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updated 20 days ago

Retinal Vessel Detection by Gabor Transform and Machine Learning, a Tutorial by ted p teng

A tutorial on detection of retinal vessels by Gabor transform and machine learning (pattern recognition, vessel segmentaion, machine learning)

Gabor_GLM_FEX.m

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updated 24 days ago

signal stationner et non stationnaire by abdelilah Douche

signal (signal processing, stationnairefenetre)

tp1Exp.m

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updated 24 days ago

Link variable from MatFile object by Mitchell

Links partial or entire variable from a MatFile object to pass as object (matlab, matfile, save)

matlinkvar

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updated 26 days ago

EzyFit 2.42 by Frederic Moisy

A free curve fitting toolbox for Matlab (approximation, interpolation, curve)

Discover Ezyfit: A free curve fitting toolbox for Matlab

about_ef (Ezyfit Toolbox)

axis0 (Ezyfit Toolbox)

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updated 28 days ago

Understand Bode Plot: Time and Freqeuency Domain GUI by Nassim Khaled

Understand Bode Plot: Time and Freqeuency Domain GUI (bode, timefrequencysimulati..., frequency)

Bode_Demo_Lab(varargin)

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updated 28 days ago

Active geometric shape models by Quan Wang

The active geometric shape model is a novel approach for fitting a geometric shape in images. (image processing, mathematics, optimization)

AGSM Canvas

DD=myspline(D,theta)

GI=gaussianBlur(I,s)

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updated 1 month ago

DimensionedVariable Class - units support for MATLAB by Sky Sartorius

A new variable type allowing use of real-world units and dimensions with enforced unit consistency. (units, dimensioned, aerospace)

DimensionedVariable Class for MATLAB - notes and demos

u2num( varargin )

unitsOf(in)

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updated 1 month ago

iSignal 3 by Tom O'Haver

Interactive smoothing, differentiation, peak sharpening and measurement of time-series signals. (signal processing, data import, chemistry)

Processed=ProcessSignal(x,y,DerivativeMode,w,type,ends,Sh...

[pY,SpectrumOut]=isignal(DataMatrix,xcenter,xrange,sm,sw,...

isignaldemo2

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updated 1 month ago

Wiener Filter for noise cancellation by Alex Dytso

Example of how to implement wiener filter for noise canellation (signal processing, digital filters, wiener filter)

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