linuxmao-org/paulstretch_cpp

PaulStretch
Copyright (C) 2006-2011 Nasca Octavian Paul, Tg. Mures, Romania

Released under GNU General Public License v.2 license

This is an experimental program for extreme stretching the audio.
Requirements:
- audiofile library
- libvorbis
- fltk library
- portaudio library
- libmad (for mp3 input)
- mxml library (for saving/loading parameters)
- not required, but you can use the FFTW library

This algorithm/program is suitable only for extreme stretching the audio.

Tips:
You can change the default output device with "PA_RECOMMENDED_OUTPUT_DEVICE" environment variable (used by PortAudio).
eg: set PA_RECOMMENDED_OUTPUT_DEVICE=1 #where 1 represents the index of the device; you can try other values for other devices

History:
20060527(0.0.1)
- First release

20060530(0.0.2)
  - Ogg Vorbis output support
  - Added a wxWidgets graphical user interface

20060812(1.000)
  - Removed the wxWidgets GUI and added a FLTK GUI (because FLTK GUI is smaller)
  - Added real-time processing/player
  - Added input support for Ogg Vorbis files
  - Improved the stretch algorithm and now the amount of stretch is unlimited (and on big stretch amounts, you don't need additional memory)
  - Added "Freeze" button to the player
  - It is possible to render to file only a selected part of the sound
  - Other improvements    

20060905(1.024)
  - Added MP3 support for input
  - Added bypass mode (if you click play with the right mouse button)
  - Improved the precision of the position slider (now it shows really what's currenly playing)
  - Added the possibility to set the stretch amount by entering the numeric value
  - Added pause mode and volume control
  - Added post-processing of the spectrum(pitch/frequency shift, octave mixer, compress,filter,harmonics)
  - Command line parameter for input filename 
  - The file can be dragged from the explorer to the file text to open it

20090424(2.0)
  - Added free envelopes, which allows the user to freely edit some parameters
  - Added stretch multiplier (with free envelope) which make the stretching variable
  - Added arbitrary frequency filter
  - Added a frequency spreader effect, which increase the bandwith of each harmonic
  - Added a frequency shifter which produces binaural beats (the beats frequencies are variable)
  - Added 32 bit WAV rendering
  - Other improvements and bugfixes

20110210(2.1)
  - Added loading/saving parameters
  - Added Linux Jack support (thanks to Robin Gareus for the patch)
  - Added "Symmetric" mode of Binaural Beats
  - Support for longer stretches - for the really patient ones - up to one quintillion times  ( 10^18 x ) ;-)
  - Fixed a bug which produced infinite loop at the end of some mp3 files (at playing or render)
  - Fixed a bug in the mp3 reader
  - other minor additions

20110211(2.1-0)
      - Increased the precision of a paremeter for extreme long stretches

20110303(2.2)
      - Improved the stretching algorithm, adding the onset detection
      - Shorten algorithm improvements 
      - Added an option to preserve the tonal part or noise part
  - Ignored the commandline parameters starting with "-" (usefull for macosx)

20110305(2.2-0)
      - gzip bugfix which prevents loading of the .psx files on Windows 
      - bugfix on freeze function on onsets

20110305(2.2-1)
  - removed the noise on starting/seeking with the player
      - bugfix on freeze function 

20110306(2.2-2)
  - buffer error on render

Enjoy! :)
Paul

zynaddsubfx_AT_yahoo com