rt_pvc :
real-time phase vocoder analysis/synthesis library + visualization
rt_pvc is a:
- real-time phase vocoder library for synthesis/analysis
- vocoder application that allows the user to do time-expansion,
frequency expansion, and cross-synthesis in real-time, from mic-input or from file.
- real-time phase vocoder visualization
- learning tool that teaches about the phase vocoder and its implemementation
- open source!
rt_pvc runs on MacOS X, Linux,
and Windows.
download rt_pvc
(you need OpenGL/GLUT):
get source (v1.0.0) (all platforms)
...
or just get the MacOS X executable
or the file-enabled MacOS X executable
usage:
> rt_pvc [-w initial window size=1024]
[-h initial hop size=128]
[-t initial time factor=1.0]
[-f initial freq factor=1.0]
[-x cross synthesis input file]
real-time keyboard control:
's' - toggle fullscreen
'-' - decrease frequency factor
'=' - increase frequency factor
SHIFT('-') - decrease time factor
SHIFT('=') - increase time factor
'(' - decrease hop size
')' - increase hop size
'p' - toggle phase adjustment
'd' - toggle dB plot
'w' - toggle wuterfall
L|R mouse - rotate
'[' - rotate
']' - rotate
'g' - freeze the simulation
'q' - quit
'h' - print help
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more phase vocoder references
- Gotzen, A.D., N. Bernardin, D. Arfib. 2000. "Traditional Implementations
of a Phase-vocoder: The Tricks of the Trade." In Proceedings of DaFX.
- Flanagan, J. L. & R. Golden 1966. "Phase vocoder." Bell System Technical Journal, 45,
1493-1509.
- Moore, J. A. 1978. "The Use of the Phase Vocoder in Computer Music Applications."
Journal of the Audio Engineering Society 24(9), 717-727.
- Dolson, M. 1987. "The Phase Vocoder: A Tutorial." Computer Music Journal
10(4):14-27.
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