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Two Tube Vocal Tract Model by Speech Processing

Speech Processing

Computes the frequency response of a two-tube model excited at the glottis and terminated at lips. (speech processing, gui)

Callbacks_Two_Tube_VT_GUI25(f,C)

Two_Tube_VT_GUI25

[fr,vm,vmins,vmaxs,v]=two_tube_model_pt2(rG,rL,l1,l2,A1,A2)

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p Tube Vocal Tract by Speech Processing

Speech Processing

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

Callbacks_p_Tube_VT_GUI25(f,C)

p_Tube_VT_GUI25

pathnew_matlab_central.m

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AMDF by Speech Processing

Speech Processing

This exercise computes the short-time average magnitude difference function (AMDF) of a speech frame (speech processing, gui)

Callbacks_amdf_GUI25(f,C,start_path)

EditrunGui

[L,M,pdlow,pdhigh,period,amdfvals,ssv]=...

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updated 9 months ago

Single Pole Cepstrum by Speech Processing

Speech Processing

This exercise compares and contrasts three methods for computing the complex cepstrum of a signall. (speech processing, gui)

Callbacks_single_pole_cepstrum_GUI25(f,C)

[nseq,nplot,x,xhat1,xhat2,xhat3]=compute_single_pole_ceps...

single_pole_cepstrum_GUI25

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Cepstral Liftering of speech by Speech Processing

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 9 months ago

Cepstrum Aliasing by Speech Processing

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 9 months ago

LPC Error by Speech Processing

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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LPC Analysis with Varying p by Speech Processing

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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Narrowband/Wideband Spectra of a Speech Frame by Speech Processing

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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Autocorrelation estimates by Speech Processing

Speech Processing

This MATLAB exercise computes four types of short-time autocorrelation of a speech analysis frame. (speech processing, gui)

Callbacks_autocorrelation_estimates_GUI25(f,C,start_path)

[L,M,K,pdlow,period,plevel,peakac,ac1,ac2,ac3,ac4,xw1,xw2...

[L,M,K,pdlow,period,plevel,peakac,ploc]=...

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Overlap Add Windows by Speech Processing

Speech Processing

This exercise verifies the windows sampling property is valid for a range of windows. (speech processing, gui)

Callbacks_overlap_add_GUI25(f,C)

[RG]=calc_RG(win,L,R);

[wsum]=add_window(win,L,R,ncopy);

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lpc varying L by Speech Processing

Speech Processing

This exercise shows the matching behavior of the LPC polynomial log magnitude spectrum of the STFT. (speech processing, guide)

Callbacks_lpc_varying_L_GUI25(f,C,start_path)

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

[xs1_sav,xs2_sav]=lpc_vary_L(xin,fs,ss,Lm,Ldelta,p,iwin_L...

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updated 9 months ago

lpc frame by Speech Processing

Speech Processing

This exercise shows how the method of linear predictive coding (LPC) models a speech frame. (speech processing, gui)

Callbacks_lpc_frame_GUI25(f,C,start_path)

[f,h0,ha,hc,hl,U_log_STFT,U_log_LPC,U_log_LPC_co_la]=...

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

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Cepstral Waterfall by Speech Processing

Speech Processing

This exercise introduces the concept of creating “Waterfall Plots” of frame-by-frame cepstrums. (speech processing, gui tools)

Callbacks_cepstral_waterfall_GUI25(f,C,start_path)

[csav,dsav,esav,ncep,n1,cepl]=compute_cepstrum_spectrum(x...

[csav,ncep,n1,cepl]=compute_cepstrum(xin,fs,ss,es,fsd,ifi...

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updated 9 months ago

Vowel Synthesis by Speech Processing

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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Windows Comparisons by Speech Processing

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 9 months ago

LPC Vocoder by Speech Processing

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 9 months ago

Zoom Strips Plot by Speech Processing

Speech Processing

A simple way to visualize and understand speech waveforms by plotting and examination. (speech processing, gui)

Callbacks_strips_plot_GUI25(f,C,start_path)

EditrunGui

plot_strips(xinn,n,vstart,m,ipl,icolor,filenames,fs,smin,...

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updated 9 months ago

LPC Error Synthesis by Speech Processing

Speech Processing

This MATLAB exercise performs LPC analysis and synthesis on a speech file. (speech processing, gui)

Callbacks_lpc_error_syn_GUI25(f,C,start_path)

lpc_error_syn_GUI25

pathnew_matlab_central.m

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updated 9 months ago

VQ/VQ Cells by Speech Processing

Speech Processing

This MATLAB exercise illustrates the cell formation properties of Vector Quantizers. (speech processing, gui)

Callbacks_VQ_Cells_GUI25(f,C)

Callbacks_VQ_Cells_GUI25(f,C)

Callbacks_VQ_GUI25(f,C)

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SIFT Pitch Detector by Speech Processing

Speech Processing

This exercise designs and implements a pitch period detector based on detecting and tracking peaks. (speech processing, gui)

Callbacks_sift_pitch_GUI25(f,C,start_path)

[pd1i,pd2i,p1i,p2i]=pitch_detect_lpc_sift(x,fs,imf,L,R,fn...

ppdf=smoothpitch_sift(pp1,pp2,plevel1,plevel2,pthr1);

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AGC by Speech Processing

Speech Processing

This exercise designs an automatic gain control (AGC) system for speech companding. (speech processing, gui)

Callbacks_agc_GUI25(f,C,start_path)

agc_GUI25

pathnew_matlab_central.m

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updated 9 months ago

Statistical Analysis by Speech Processing

Speech Processing

This exercise estimates the statistical properties of a speech signal, namely the PDF. (speech processing, gui)

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

Callbacks_statistical_analysis_GUI25(f,C,start_path)

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

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Cepstrum Computation by Speech Processing

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 9 months ago

Autocorrelation Pitch Detector by Speech Processing

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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ADPCM by Speech Processing

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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Endpoint Detector by Speech Processing

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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Record Display Speech by Speech Processing

Speech Processing

Record your own speech file to use for other exercises. (speech processing, gui)

Callbacks_record_display_speech_GUI25(f,C,start_path)

[B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi...

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

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updated 9 months ago

Time Domain Features by Speech Processing

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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Cepstrum Computation FIR by Speech Processing

Speech Processing

This exercise compares three algorithms for computing the complex cepstrum of two finite sequences. (speech processing, gui)

Callbacks_complex_cepstrum_fir_GUI25(f,C)

[b,L,stitle,freq,BNmag_ph,phase_rad,nfft,cepl,xhat1,xhats...

[b,L,stitle,freq,BNmag_ph,phase_rad,nfft,cepl,xhat1,xhats...

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updated 9 months ago

LSP roots by Speech Processing

Speech Processing

This exercise compares the properties of the LPC polynomial match to a frame of speech with the LSP. (speech processing, gui)

Callbacks_lsp_roots_GUI25(f,C,start_path)

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

[x,xs1,xs2,G,A,XP,XQ,L,P,Q]=lsp_analysis(xin,fs,ss,Lm,iwi...

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updated 9 months ago

spectral smoothing by Speech Processing

Speech Processing

This exercise smooths the log magnitude spectrum of a frame of voiced speech using liftering. (speech processing, gui)

Callbacks_spectral_smoothing_GUI25(f,C,start_path)

[X1s,X2s,X3s,L]=compute_spectra(xin,fs,ss,Lm,p,iwin_STFT,...

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

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updated 9 months ago

Uniform Quantization by Speech Processing

Speech Processing

This MATLAB exercise illustrates the process of uniform quantization of a speech sample. (speech processing, gui)

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

Callbacks_uniform_quantization_GUI25(f,C,start_path)

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

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updated 9 months ago

Phase Vocoder by Speech Processing

Speech Processing

This MATLAB exercise implements a phase vocoder. (speech processing, gui)

Callbacks_phase_vocoder_GUI25(f,C,start_path)

[B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi...

istft(d, ftsize, w, h)

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updated 9 months ago

Spectrogram by Speech Processing

Speech Processing

This exercise plots wideband and narrowband speech spectrograms for a user-designated speech file. (speech processing, gui)

Callbacks_Spectrogram_GUI25(f,C,start_path)

Spectrogram_GUI25

[B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi...

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updated 9 months ago

Bayesian VUS Classifier by Speech Processing

Speech Processing

This exercise utilizes four programs to train a Bayesian classifier and classify frames of signals. (speech processing, gui)

Callbacks_VUS_Analysis_GUI25(f,C,start_path)

Callbacks_VUS_Train_GUI25(f,C,start_path)

VUS_Analysis_GUI25

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Play Pitch Period Contour by Speech Processing

Speech Processing

The exercise tries to separate the main properties of speech excitation function from vocal tract. (speech processing, gui)

Callbacks_play_pitch_GUI25(f,C,start_path)

[pd1,pd2,p1,p2]=pitch_detect_cepstrum(peaksigo,fsd,iplot,...

e=create_excitation(pitch,fs,R)

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updated 9 months ago

Subband coders by Speech Processing

Speech Processing

This MATLAB exercise implements a two-band subband coder. (speech processing, gui)

Callbacks_subband_coders_GUI25(f,C,start_path)

plotresp(h0,N,fs,fname)

subband_coders_GUI25

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Rosenburg Glottal Pulse by Speech Processing

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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Three Tube Vocal Tract by Speech Processing

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 9 months ago

Quantizer Characteristic by Speech Processing

Speech Processing

This exercisedemonstartes quantizing speech using uniform and a logarithmic (mu-law) quantizer. (speech processing, gui)

Callbacks_quantizer_characteristic_GUI25(f,C)

quantizere_characteristic_GUI25

pathnew_matlab_central.m

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updated 9 months ago

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

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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Log Harmonic Product Spectrum by Speech Processing

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 9 months ago

Cepstral Pitch by Speech Processing

Speech Processing

This exercise implements a pitch period detector based on detecting and tracking peaks in speech. (speech processing, gui)

Callbacks_cepstral_pitch_GUI25(f,C,start_path)

cepstral_pitch_GUI25

ppdf=smoothpitch(pp1,pp2,plevel1,plevel2,pthr1);

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updated 9 months ago

SNR by Speech Processing

Speech Processing

This MATLAB exercise computes and plots the SNR of a quantized speech file. (speech processing, gui)

Callbacks_snr_GUI25(f,C,start_path)

qplot(s,nbits,mu,ncases,iplot)

qplot_lin_log_a(x,nbits,mu,showtheory)

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updated 9 months ago

Formant Estimation by Speech Processing

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 9 months ago

Mu Law Compander by Speech Processing

Speech Processing

This exercise shows the mu-law input-output characteristic for a range of values of mu from 1 to 500 (speech processing, gui)

Callbacks_mu_law_compander_GUI25(f,C,start_path)

mu_law_compander_GUI25

pathnew_matlab_central.m

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updated 9 months ago

Isolated Digits Record by Speech Processing

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 9 months ago

Composite Vocal Tract by Speech Processing

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 9 months ago

Echo Signal by Speech Processing

Speech Processing

This exercise demonstrates how and echo can be introduced into a signal. (speech processing, gui)

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

Callbacks_echo_signal_G25(f,C,start_path)

echo_signal_GUI25

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