Flexible realtime timestretching and pitchshifting with a granular engine in Max/MSP.

With this external you can expand your max toolkit for natural and experimental playback. It incorporates the algorithm used by Mattijs Kneppers in his granular stretcher patch and adds a load of extra options and features.

It is available for both windows and mac, and works in max 5 (in 32bit) and max 6 (in 64 bit).

The video below gives you an impression of what you can do with it by giving you a walkthrough using the helpfile:

Additional URLs

January 25, 2012 | 4:58 pm

Amazing External! Thanks for gifting the community with your creativity.

January 31, 2012 | 5:24 am

Thanks a LOT ! this is a powerful and easy to use object =)

February 4, 2012 | 3:39 pm

looks like the utlimate ready-to-use pitchshifter/granulator

May 5, 2012 | 6:52 pm

works good, thanks!!

September 23, 2013 | 1:13 am

Extremely awesome… thank you so much!

November 25, 2013 | 4:44 pm

hi there,
great external, love it.

but, does anyone now a way to be able to select start and end points of a loop (using grainstretch~ for playback), and change them at any time? Would like to be able to do that with waveform~ if poss.?

November 26, 2013 | 1:21 pm

excuse me if this is a dense question, but it says it works in max 64bit. however there is no 64bit external included in the zip file and thus max will not recognize the file. can someone clue me in here? thanks!

June 19, 2014 | 3:53 am

How does grainstretch~ work with a microphone?

  • This reply was modified 1 year by  agnesw.
October 25, 2014 | 3:06 am

I previously used grainstretch but now I have switched to 64bit it doesn’t seem to work (won’t load).
Any tips or alterantives?

December 11, 2014 | 7:25 am

Same problem here, it works when i start the 32bit max but won’t load in the 64bit version .. And this is a problem because i want to use it with max for live and this requires max to run in 64bit (because max for live wont open in 32bit with my 64bit version of Live)
I really want to use it it looks awesome ! Please help :)

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