Login / Register  0 items | $0.00 NewWhat is KVR? Submit News Advertise

PaulStretch3 beta(5) release

Xenakios
KVRian
 
954 posts since 9 Sep, 2005, from Oulu, Finland

Postby Xenakios; Wed Sep 13, 2017 2:49 pm PaulStretch3 beta(5) release

(edit : Requirement for OS-X version changed since beta 5. Links for beta 4 also reposted, since it worked better for some people.)

As a little side project, I've worked the past couple of days on modernizing the PaulStretch application (originally by Nasca Octavian Paul) for extreme time stretching and other processing of sound files.

If someone cares to beta test and comment, it is now available for 64 bit Windows 7 or newer and 64 bit OS-X 10.9 or newer.

https://www.youtube.com/watch?v=8yWVCMp ... e=youtu.be

20170914(3.0.0beta1, Xenakios fork)
- GUI and audio IO (sound files, audio hardware) code replaced with JUCE based code.
- Not all of the existing features are yet available from the GUI, but hopefully eventually they will be.
- Audio file reading code changed to use floating point samples to get
the benefits of the extended dynamic range of floating point files.
- Resample audio to interface samplerate, if needed
- Allow choosing prebuffering amount. Smaller amounts allow faster response to parameter
changes while realtime playing
- Efforts to modernize the code base to use smart pointers, std::vector for audio buffers etc.

20170914(3.0.0beta2, Xenakios fork)
-Added wav file format options for rendering
-Added some keyboard shortcuts : Space bar for play/stop, 'F' for toggle freeze, Home for seek to beginning
-Allow drag and drop of audio file into app window
-Menu button menu shows recently used files
-Audio in realtime playback is clipped after volume adjustment

20170914(3.0.0beta3, Xenakios fork)
-Fixed buffer size bug in offline rendering code
-Prevent rendering over the input file
-Added audio output visualizer (can hide if takes too much CPU)
-Added feature to allow recording live audio to disk
-Disable FFT size slider while playing back. (Need to be determined later if the FFT size can be changed in real time.)

2017-09-15 (3.0.0beta4, Xenakios fork)
-When audio stopped, refresh the GUI components less often to reduce CPU consumption
-If opening audio output device fails, show error message on application start-up
-Preliminary audio looping support (does not crossfade yet, so may cause additional noise)

2017-09-19 (3.0.0beta5, Xenakios fork)
-New playback code that is shared for realtime and offline rendering use.
-Multichannel input files, audio output device and rendering support.
-Allow toggling looping playback.
-Most processing parameters now exposed in the GUI.
-Delete previously existing file when rendering.
-Binary built with FFTW3 library. Optionally allow FFTW3 to do its plans slowly to
possibly result in faster FFTs. (May take several seconds before playback will start.)
-Use Mersenne Twister random generator for the spectral phases.
-CPU and prebuffering ready meters. (Note that on faster machines the CPU meter may never show any load,
as it measures the time spent in the realtime audio callback.)



Download :

64 bit Windows 7 or higher :

beta 5 https://goo.gl/e8gzKt
beta 4 https://goo.gl/Qe2CXJ

64 bit Mac OS-X 10.9 or higher :

beta 5 : https://goo.gl/mtA3nQ
beta 4 : https://goo.gl/nq441D
Last edited by Xenakios on Sun Sep 24, 2017 4:50 pm, edited 11 times in total.
cturner
KVRist
 
62 posts since 7 Dec, 2009, from GWB

Postby cturner; Wed Sep 13, 2017 3:40 pm Re: PaulStretch3 beta release

Very cool, thanks!
User avatar
ho66it
KVRist
 
215 posts since 19 Dec, 2011, from Colorado

Postby ho66it; Wed Sep 13, 2017 3:49 pm Re: PaulStretch3 beta release

cturner wrote:Very cool, thanks!
+1 !!
bungle
KVRian
 
1394 posts since 12 Mar, 2004

Postby bungle; Wed Sep 13, 2017 4:09 pm Re: PaulStretch3 beta release

Awesome
If your plugin is a C++ creation, please don't say so.
If it is, pop round Marcos, he has just bought you a Mac to port it.
ghettosynth
KVRAF
 
9483 posts since 13 Oct, 2009

Postby ghettosynth; Wed Sep 13, 2017 4:26 pm Re: PaulStretch3 beta release

Cool, tnx.

Definitely having some problems with the playback positioning on some files. I'm Win7-64. I'll try to nail it down a bit better, but, at the moment it doesn't seem to be playing from the start of the wave on certain files. Also, it's not clear what the wave selection is supposed to do? It would be awesome if wave selection would choose an audition/render region.
Xenakios
KVRian
 
954 posts since 9 Sep, 2005, from Oulu, Finland

Postby Xenakios; Wed Sep 13, 2017 4:42 pm Re: PaulStretch3 beta release

ghettosynth wrote:at the moment it doesn't seem to be playing from the start of the wave on certain files. Also, it's not clear what the wave selection is supposed to do? It would be awesome if wave selection would choose an audition/render region.

Do you mean the very start seems to be missing from the sound? The stretch algorithm is problematic with the sound start and end, it needs to be checked if anything can be done about those issues. (Of course there's FFT windowing and such involved, the start going missing could be due to that.)

The wave selection currently determines the time area to be rendered. For realtime playback the selection start determines the playback start, but not the end time. (Going to add support for that later as well as make the time selection to loop.)
ghettosynth
KVRAF
 
9483 posts since 13 Oct, 2009

Postby ghettosynth; Wed Sep 13, 2017 5:01 pm Re: PaulStretch3 beta release

Xenakios wrote:
ghettosynth wrote:at the moment it doesn't seem to be playing from the start of the wave on certain files. Also, it's not clear what the wave selection is supposed to do? It would be awesome if wave selection would choose an audition/render region.

Do you mean the very start seems to be missing from the sound? The stretch algorithm is problematic with the sound start and end, it needs to be checked if anything can be done about those issues. (Of course there's FFT windowing and such involved, the start going missing could be due to that.)

The wave selection currently determines the time area to be rendered. For realtime playback the selection start determines the playback start, but not the end time. (Going to add support for that later as well as make the time selection to loop.)


I'm not sure because I just grabbed a file at random. Let me play with it some more and see what's happening. It does seem, however, that loading a new file may not reset the selection and/or start because when I loaded a file after setting the region it played almost nothing of the file.
Xenakios
KVRian
 
954 posts since 9 Sep, 2005, from Oulu, Finland

Postby Xenakios; Wed Sep 13, 2017 5:11 pm Re: PaulStretch3 beta release

ghettosynth wrote:played almost nothing of the file.

I think that can happen if the input file is rather short and the FFT window size large. So don't go too crazy with the FFT size parameter, especially if the source sound is short...That can possibly be later solved by adding the looping playback. Then even the longest FFTs should be able to grab material out of the file.
ghettosynth
KVRAF
 
9483 posts since 13 Oct, 2009

Postby ghettosynth; Wed Sep 13, 2017 5:28 pm Re: PaulStretch3 beta release

Xenakios wrote:
ghettosynth wrote:played almost nothing of the file.

I think that can happen if the input file is rather short and the FFT window size large. So don't go too crazy with the FFT size parameter, especially if the source sound is short...That can possibly be later solved by adding the looping playback. Then even the longest FFTs should be able to grab material out of the file.


Yep, I think that's what happened.

In any case, it's a huge step up in terms of usability. I would like to see the region loop play though, that would make a huge difference in terms of exploration and usability.
User avatar
thecontrolcentre
KVRAF
 
21027 posts since 27 Jul, 2005, from the wilds of wanny

Postby thecontrolcentre; Wed Sep 13, 2017 5:34 pm Re: PaulStretch3 beta release

Thanks for taking the time to do this Xenakios. Will test it out ...
User avatar
shroom81
KVRian
 
510 posts since 26 May, 2008, from Reykjavik, Iceland.

Postby shroom81; Wed Sep 13, 2017 6:12 pm Re: PaulStretch3 beta release

Oh yes, thank you so much.
"MFreeEffectsBundle (SOLD)"
s_t
KVRist
 
241 posts since 24 Dec, 2004

Postby s_t; Wed Sep 13, 2017 11:18 pm Re: PaulStretch3 beta release

Thank you very much bringing this fantastic tool back!

A wet dream, I guess, would be a VSTi version with keyboard and ADSR envelopes.
Eleventh
KVRist
 
297 posts since 1 Dec, 2012

Postby Eleventh; Wed Sep 13, 2017 11:42 pm Re: PaulStretch3 beta release

Wow thank you! real-time tweaking.. damn

Would you accept a couple small feature requests?

- Space bar for play/stop
- Optional looping of the selection during playback

Paulstretch is the shit! and with a good user interface like this... nice work! :party:
User avatar
aMUSEd
KVRAF
 
27938 posts since 14 Sep, 2002, from In teh net

Postby aMUSEd; Wed Sep 13, 2017 11:46 pm Re: PaulStretch3 beta release

Cool thanks
User avatar
exmatproton
KVRAF
 
1824 posts since 24 Apr, 2011

Postby exmatproton; Thu Sep 14, 2017 12:41 am Re: PaulStretch3 beta release

looking good :)
Next

Moderator: Moderators (Main)

Return to Effects

Who is online

Users browsing this forum: cknapheide, evilantal, lazymarc, portulaca, Restless, rockbottom, Tweetmeme [Bot], winkie00