DEMO_BLOCKPROC_EFFECTS Various vocoder effects using DGT
Usage: demo_blockproc_effects('gspi.wav')
For additional help call DEMO_BLOCKPROC_EFFECTS without arguments.
This demo works correctly only with the sampling rate equal to 44100 Hz.
This script demonstrates several real-time vocoder effects. Namely:
1) Robotization effect: Achieved by doing DGT reconstruction using
absolute values of coefficients only.
2) Whisperization effect: Achieved by randomizing phase of DGT
coefficients.
3) Pitch shifting effect: Achieved by stretching/compressing
coefficients along frequency axis.
4) Audio morphing: Input is morphed with a background sound such
that the phase of DGT coefficients is substituted by phase
of DGT coefficients of the background signal.
File beat.wav (at 44,1kHz) (any sound will do) is expected to
be in the search path, oherwise the effect will be disabled.
This demo was created for the Lange Nacht der Forschung 4.4.2014 event.
Url: http://ltfat.github.io/doc/demos/demo_blockproc_effects.html
Package: ltfat