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LTFAT - Demos

Peter L. Søndergaard, 2007 - 2023.

This page documents the demos.

Basic demos

demo_dgt - dgt and comparison to sgram
demo_dgt_parametrize - Calculate the STFT
demo_gabfir - FIR windows in Gabor systems.
demo_wavelets - Wavelet representations using fwt and wfbt.

Compression

demo_imagecompression - Image compression using dwilt and fwt
demo_audiocompression - Audio compression using a wmdct.

Denoising

demo_audiodenoise - Audio denoising using a wmdct.

Applications

demo_ofdm - Simple OFDM demo.
demo_audioshrink - Lasso shrinkage of audio signal.
demo_gabmulappr - Approx. of time-varying system.
demo_bpframemul - A Gabor multiplier as a time-varying bandpass filter.
demo_frsynabs - Synthetic spectrogram iterative reconstruction.
demo_filterbanksynchrosqueeze - Reconstruction from synchrosqueezed representation.
demo_tfjigsawsep - Time-Frequency jigsaw puzzle tonal-transient-residual separation

Aspects of particular functions

demo_nsdgt - Non-stationary Gabor systems
demo_pgauss - How to use pgauss.
demo_pbspline - How to use pbspline.
demo_gabmixdual - How to use gabmixdual.
demo_framemul - Time-frequency localization by Gabor multiplier.
demo_phaseplot - Phaseplots.
demo_phaseret - Spectrogram phase retrieval and phase difference
demo_nextfastfft - Next fast FFT size.
demo_filterbanks - Non-stationary Gabor systems defined in frequency domain
demo_waveletfilters - Wavelet filter banks.

Auditory scales and filters

demo_audscales - Different auditory scales.
demo_auditoryfilterbank - Erb-spaced auditory filter bank.
demo_wfbt - Auditory filter banks created using wfbt.

Block-processing demos

demo_blockproc_basicloop - Simple audio playback loop.
demo_blockproc_paramequalizer - Parametric equalizer.
demo_blockproc_denoising - Variable noise-reduction.
demo_blockproc_slidingsgram - Sliding spectrogram plot.
demo_blockproc_slidingcqt - Sliding CQT plot.
demo_blockproc_slidingerblets - Sliding Erblets plot.
demo_blockproc_dgtequalizer - Variable Gabor Multiplier as equalizer.
demo_blockproc_effects - Real-time vocoder effects.

For help, bug reports, suggestions etc. please visit http://github.com/ltfat/ltfat/issues