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updated 6 months ago |
Computes the frequency response of a two-tube model excited at the glottis and terminated at lips. |
0 Comments 30 Downloads (30 Days) |

updated 6 months ago |
This exercise computes the frequency response of a p-tube model of a human vocal tract. |
0 Comments 18 Downloads (30 Days) |

updated 6 months ago |
This exercise computes the short-time average magnitude difference function (AMDF) of a speech frame |
0 Comments 37 Downloads (30 Days) |

updated 6 months ago |
This exercise compares and contrasts three methods for computing the complex cepstrum of a signall. Callbacks_single_pole_cepstrum_GUI25(f,C) [nseq,nplot,x,xhat1,xhat2,xhat3]=compute_single_pole_ceps... |
0 Comments 13 Downloads (30 Days) |

updated 6 months ago |
Spectral smoothing effects of low frequency cepstral liftering on log magnitude spectrum of speech 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... |
0 Comments 33 Downloads (30 Days) |

updated 6 months ago |
Estimates the level of aliasing when finite size FFTs for the computation are used 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... |
0 Comments 19 Downloads (30 Days) |

updated 6 months ago |
Shows the (flat spectrum) nature of the LPC error signal for a typical speech frame (voiced speech) |
0 Comments 28 Downloads (30 Days) |

updated 6 months ago |
illustrates the matching behavior of LPC polynomial log magnitude spectrum to log magnitude of STFT Callbacks_lpc_varying_p_GUI25(f,C,start_path) |
0 Comments 28 Downloads (30 Days) |

updated 6 months ago |
Narrowband/Wideband Spectra of a Speech Frame Compares and contrasts the effects of using either of two different windows |
0 Comments 21 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise computes four types of short-time autocorrelation of a speech analysis frame. Callbacks_autocorrelation_estimates_GUI25(f,C,start_path) [L,M,K,pdlow,period,plevel,peakac,ac1,ac2,ac3,ac4,xw1,xw2... |
1 Comment 41 Downloads (30 Days) |

updated 6 months ago |
This exercise verifies the windows sampling property is valid for a range of windows. |
0 Comments 24 Downloads (30 Days) |

updated 6 months ago |
This exercise shows the matching behavior of the LPC polynomial log magnitude spectrum of the STFT. 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... |
0 Comments 28 Downloads (30 Days) |

updated 6 months ago |
This exercise shows how the method of linear predictive coding (LPC) models a speech frame. Callbacks_lpc_frame_GUI25(f,C,start_path) |
0 Comments 25 Downloads (30 Days) |

updated 6 months ago |
This exercise introduces the concept of creating “Waterfall Plots” of frame-by-frame cepstrums. 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... |
0 Comments 21 Downloads (30 Days) |

updated 6 months ago |
Synthesizes a vowel sound with a pitch frequency that linearly varies from a user-specified one |
0 Comments 26 Downloads (30 Days) |

updated 6 months ago |
computes and compares and contrasts the time and frequency responses of 6 L-point commonly used wind |
0 Comments 23 Downloads (30 Days) |

updated 6 months ago |
Builds an LPC vocoder, i.e., performs LPC analysis and synthesis on a speech file Callbacks_lpc_vocoder_GUI25(f,C,start_path) [Afile,Gfile,nframes,excx,exct]=lpc_analysis(xin,ss,es,L,... |
2 Comments 53 Downloads (30 Days) |

updated 6 months ago |
A simple way to visualize and understand speech waveforms by plotting and examination. Callbacks_strips_plot_GUI25(f,C,start_path) plot_strips(xinn,n,vstart,m,ipl,icolor,filenames,fs,smin,... |
0 Comments 25 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise performs LPC analysis and synthesis on a speech file. |
0 Comments 32 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise illustrates the cell formation properties of Vector Quantizers. |
0 Comments 40 Downloads (30 Days) |

updated 6 months ago |
This exercise designs and implements a pitch period detector based on detecting and tracking peaks. Callbacks_sift_pitch_GUI25(f,C,start_path) [pd1i,pd2i,p1i,p2i]=pitch_detect_lpc_sift(x,fs,imf,L,R,fn... |
0 Comments 38 Downloads (30 Days) |

updated 6 months ago |
This exercise designs an automatic gain control (AGC) system for speech companding. |
0 Comments 23 Downloads (30 Days) |

updated 6 months ago |
This exercise estimates the statistical properties of a speech signal, namely the PDF. |
0 Comments 29 Downloads (30 Days) |

updated 6 months ago |
Compares conventional and analytical methods of cepstrum analysis of a finite duration speech frame 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... |
0 Comments 25 Downloads (30 Days) |

updated 6 months ago |
Autocorrelation Pitch Detector Implements a pitch period detection algorithm using modified autocorrelation method |
0 Comments 60 Downloads (30 Days) |

updated 6 months ago |
Implements an ADPCM coder for waveform coding of speech |
0 Comments 33 Downloads (30 Days) |

updated 6 months ago |
Analyzes an audio file which contains a period of background signal, and a period of speech Callbacks_endpoint_detector_GUI25(f,C,start_path) |
0 Comments 47 Downloads (30 Days) |

updated 6 months ago |
Record your own speech file to use for other exercises. Callbacks_record_display_speech_GUI25(f,C,start_path) [B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi... |
0 Comments 33 Downloads (30 Days) |

updated 6 months ago |
Examines the behavior of a set of three time domain, short-time features |
0 Comments 24 Downloads (30 Days) |

updated 6 months ago |
This exercise compares three algorithms for computing the complex cepstrum of two finite sequences. 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... |
0 Comments 21 Downloads (30 Days) |

updated 6 months ago |
This exercise compares the properties of the LPC polynomial match to a frame of speech with the LSP. 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... |
0 Comments 24 Downloads (30 Days) |

updated 6 months ago |
This exercise smooths the log magnitude spectrum of a frame of voiced speech using liftering. 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... |
0 Comments 33 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise illustrates the process of uniform quantization of a speech sample. |
1 Comment 53 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise implements a phase vocoder. Callbacks_phase_vocoder_GUI25(f,C,start_path) [B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi... |
0 Comments 29 Downloads (30 Days) |

updated 6 months ago |
This exercise plots wideband and narrowband speech spectrograms for a user-designated speech file. Callbacks_Spectrogram_GUI25(f,C,start_path) [B,BA,F,T]=create_spectrogram(y,nfft,fs,w,dyn_range,logLi... |
0 Comments 30 Downloads (30 Days) |

updated 6 months ago |
This exercise utilizes four programs to train a Bayesian classifier and classify frames of signals. Callbacks_VUS_Analysis_GUI25(f,C,start_path) |
0 Comments 26 Downloads (30 Days) |

updated 6 months ago |
The exercise tries to separate the main properties of speech excitation function from vocal tract. Callbacks_play_pitch_GUI25(f,C,start_path) [pd1,pd2,p1,p2]=pitch_detect_cepstrum(peaksigo,fsd,iplot,... |
0 Comments 36 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise implements a two-band subband coder. |
0 Comments 26 Downloads (30 Days) |

updated 6 months ago |
Computes the discrete-time Rosenberg glottal pulse approximation in the time and frequency domains |
0 Comments 24 Downloads (30 Days) |

updated 6 months ago |
This exercise computes the frequency response of a three-tube model of a human vocal tract. Callbacks_Three_Tube_VT_GUI25(f,C) [fr,vm,vmins,vmaxs,v]=three_tube_model_pt2(rG,rL,l1,l2,l3... |
0 Comments 23 Downloads (30 Days) |

updated 6 months ago |
This exercisedemonstartes quantizing speech using uniform and a logarithmic (mu-law) quantizer. Callbacks_quantizer_characteristic_GUI25(f,C) |
0 Comments 15 Downloads (30 Days) |

updated 6 months ago |
Waveform Similarity and Overlap Add (WSOLA) for Speech and Audio implements the WSOLA method of Verhelst and Roelands for for High Quality Time-Scaled speech |
0 Comments 28 Downloads (30 Days) |

updated 6 months ago |
Plots a sequence of frames of both HPS and LHPS Callbacks_log_harmonic_GUI25(f,C,start_path) [ss]=plot_speech_cursor(x,ss,curr_file,istart,graphicPane... |
0 Comments 22 Downloads (30 Days) |

updated 6 months ago |
This exercise implements a pitch period detector based on detecting and tracking peaks in speech. |
1 Comment 34 Downloads (30 Days) |

updated 6 months ago |
This MATLAB exercise computes and plots the SNR of a quantized speech file. Callbacks_snr_GUI25(f,C,start_path) |
0 Comments 35 Downloads (30 Days) |

updated 6 months ago |
Illustrates an algorithm for estimating the locations of the formants of voiced speech intervals Callbacks_formant_estimation_GUI25(f,C,start_path) [Fmc,startsav,endsav]=extend_runs(nrun,startsav,endsav,nf... |
0 Comments 25 Downloads (30 Days) |

updated 6 months ago |
This exercise shows the mu-law input-output characteristic for a range of values of mu from 1 to 500 |
0 Comments 15 Downloads (30 Days) |

updated 6 months ago |
Implements a speaker trained, template-based, isolated digit recognizer Callbacks_dtw_isolated_digits_GUI25(f,C) [distance,paths,distances]=dtw_backtrack_dist(cref,nref,c... |
0 Comments 26 Downloads (30 Days) |

updated 6 months ago |
Illustrates vocal tract response, glottal pulse, radiation response for voiced and unvoiced speech Callbacks_composite_vocal_tract_GUI25(f,C) |
0 Comments 21 Downloads (30 Days) |

updated 6 months ago |
This exercise demonstrates how and echo can be introduced into a signal. |
0 Comments 28 Downloads (30 Days) |