pv in WaoN project is yet another phase vocoder implementation for my understanding of the process behind WaoN and others. Here is what you can do:
Several schemes are implemented:
pv is included since Release 0.4. Please visit File Releases @ SF. Or you can get directory from CVS Repository.
To install the program "pv",
To build "pv", you need the following libraries:
Now, pv has CUI by curses. Here's the screenshot:
========== pv ==========
file : test.wav
current : 0000064512 / 0043885440
loop : 0000000000 - 0043885439 < > by cur, [ { expand } ]
rate : 1.0 LEFT / RIGHT
pitch : C +0 ( +0) UP / DOWN
phase-lock : off L / N
window : hanning W
fft-len : 002048
hop(syn) : 000512 H / h
hop(ana) : 000512
hop(res) : 000512
status : stop SPACE
----------------------------------------
Welcome WaoN-pv in curses mode.
Here's a help screen:
$ ./pv --help
WaoN-pv - yet-another phase vocoder, Version 0.9
Copyright (C) 1998-2007 Kengo Ichiki <kengoichiki@gmail.com>
Web: http://waon.sourceforge.net/
WaoN-pv is yet-another phase vocoder, with which you can do time-strech
and pitch-shift an sound file.
Usage: ./pv [option ...]
Options:
-h, --help print this help.
-v, --version print version information.
OPTIONS FOR FILES
-i, --input input file (default: stdin)
-o, --output output file in flac (default: play audio by ao)
FFT OPTIONS
-n FFT data number (default: 2048)
-w --window 0 no window
1 parzen window
2 welch window
3 hanning window (default)
4 hamming window
5 blackman window
6 steeper 30-dB/octave rolloff window
PHASE-VOCODER OPTIONS
-hop hop number (default: 512)
-rate synthesize rate; larger is faster (default: 1.0)
-pitch pitch shift. +1/-1 is half-note up/down (default: 0)
-scheme give the number for PV scheme
1 : conventional PV
2 : PV by complex arithmetics with fixed hops
3 : Puckette's loose-locking PV
4 : Puckette's loose-locking PV by complex with fixed hops
5 : PV with fixed hops by Ellis
6 : PV in freq. domain
7 : plain superimpose (no-FFT)
0 : interactive PV with curses (default)
KEY BINDINGS IN CURSES MODE (with -scheme 0, the default)
SPACE : play / stop
< > : set loop range
[{ }] : expand the loop range
L l : phase-lock on / off
W w : change window
H h : hop-size up / down
UP / DOWN : pitch up / down
LEFT / RIGHT : pitch up / down
R r HOME : reset parameters
N n : toggle for no-FFT mode
Q q : quit