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Paulstretch

1 Star2 Stars3 Stars4 Stars5 Stars (14 votes, average: 4.29 out of 5)

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This is an experimental program for extreme stretching the audio. insanely extreme..

Requirements:
– audiofile library
– libvorbis
– fltk library
– portaudio library
– not required, but you can use the FFTW library

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

There is lot room for improvements on this algorithm like:
– on sharp attacks to make the window smaller and larger on steady sounds. This avoid adding constant sidebands on steady sounds and smoothing too much the sharp sounds.
– even for small window, the sidebands produced can be lowered (how?)
– it’s easy to add effects, like increasing the bandwidth of harmonics (larger on higher harmonics) or simple noise removal (etc)

CHANGES:
- improved performance (uses libfftw – “fastest fourier transform in the west”)
- switched to portaudio_v18 (v19 caused static glitches on some machines)
- saves to .wav, for real
- window resizable (so you can stack thousands of ‘em – check paulstretch_multiple)
- select audio device (use soundflower for recording realtime perfomance)
- timeline markers (mark your favorite spots)
- disable snap to fft windows, when freezin’
- added a volume slider
- changed gui to my favorite color ;)
- keyboard shortcuts:
Z – PLAY
X – FREEZE
Y – STOP
CMD-O – OPEN FILE

http://www.em411.com/blog/682/0/Paulstretch_Mac_Update.html (1413 clicks)

Popularity: 4%

filed under the Audio Players, Computer Aided Music category.

7 Comments to “Paulstretch”


  1. patrick patrick Says:
    May 31st, 2008 at 5:00 am

    anyone out there that can recompile the source as a universal binary? this definately is broken for me (Intel, 10.5)


  2. patrick patrick Says:
    January 21st, 2009 at 4:01 am

    even though this doesn’t work on Intel Macs I recently realized that the PC version works perfectly on Intel Macs using Darwine http://www.kronenberg.org/darwine/


  3. dhmiller dhmiller Says:
    January 30th, 2009 at 4:48 am

    couldn’t access the File open menu, though the interface seems alive other wise. 10.5.4… any thoughts?
    d.


  4. patrick patrick Says:
    February 6th, 2009 at 4:43 am

    Don’t bother with the Mac version, it doesn’t work on Intel Macs. Download a port of Wine, like the link I left above. Use the helper and d/l the required codecs, etc. And then download the Windows version of Paulstretch. It works great, at least until someone does an updated port, or Paul updates the source code for Mac friendly compiling.


  5. patrick patrick Says:
    May 27th, 2009 at 4:01 am

    Paulstretch has been updated to 2.0 and someone kindly ported a working version for OS X that works on Intel Macs running Leopard, etc. He also kindly posted the source and build instructions for everyone else: http://music.cornwarning.com/?p=407


  6. lard_pwn lard_pwn Says:
    August 19th, 2010 at 2:12 am

    A reddit full of tracks made with this software can be found here: http://www.reddit.com/r/slowitup/. Super sludge dreamscape ambient hypnosis….


  7. mark mark Says:
    August 23rd, 2010 at 2:19 am

    OMG, this kills Amazing x
    Can i find a Mac Power PC version that runs on OSX 10.4? Willing to pay!!!!

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