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Seeking tips for live performance (Read 1928 times)
gigertron
Seeking tips for live performance
Nov 9th, 2009, 3:50pm  
I'm doing live visuals for a music event in just under a couple weeks.
I'm doing all the smart things, like not allocating in draw() and getting all my from-disc stuff done in setup. My sketch has a bunch of sub-sketches that I switch between, so I'm running continously.

What sort of hardening advice do people have, to make sure proc sketches will be stable and fluid for several hours? Aside from OS zealotry, of course. I'll do some overnight tests to see if it leaks memory or anything beforehand.
The libraries I'm using most are ESS, treemap, saito.objloader, opengl, and procontroll.
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gigertron
Re: Seeking tips for live performance
Reply #1 - Nov 24th, 2009, 11:59am  
Wow, either I posted in the wrong space or there aren't that many people doing this, or they don't want more people doing it (most likely)

anyway, things I learned:
underclocking: my old hp laptop would overheat after 30 minutes or so, reduce CPU speed, and chug for a few seconds. Had to use OS power settings to underclock it. Easy to do, but only found it through testing.

projoctors: connect, clone display, THEN start presenting. otherwise you won't get fullscreen right.

line levels. Make friends with an audio engineer, talk to your sound person at the venue. Your laptop probably has a mic input, not a line input, but many PCs have RealTech hardware, which lets you reconfigure your hardware gain from 0 to +20dB. If you'd rather have signal than noise, and don't want everything clipped to uselessness, and don't want to splash $300 on an external usb sound device, this is key.

midi controllers. midibus lib + korg nanoControl and the related drum pad == happy! extra fun is a good joystick and procontroll.

big bonus is when you AND the musician can see the screen, otherwise you distract the hell out of them : D

http://www.youtube.com/v/Xc3Pdlts-UY&hl=en_US&fs=1&rel=0
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wiggle
Re: Seeking tips for live performance
Reply #2 - Nov 29th, 2009, 10:23am  
I just created a plugin for Ableton Max4Live which sends numerical audio peak data from Live to Processing via OSC.

Any program that can tap into OSC can use the data (Processing with the OSCp5 library, Super Collider, Blender, etc.)

You may want to try letting Max4Live handle the audio analysis instead of Processing + ESS.

Anyway, you can find it here: w w w . u n s o u n d . c o m / M 4 L /
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wiggle
Re: Seeking tips for live performance
Reply #3 - Nov 29th, 2009, 10:59am  
Also, if you post to "Sound, Music Libraries," you might get more of a response.  Smiley
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jonobrone
Re: Seeking tips for live performance
Reply #4 - Nov 29th, 2009, 1:09pm  
wow, this is fantastic Gil! Is this on the Processing Library page? If not it should be...really killer.
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gigertron
Re: Seeking tips for live performance
Reply #5 - Dec 12th, 2009, 10:09pm  
wiggle wrote on Nov 29th, 2009, 10:23am:
I
You may want to try letting Max4Live handle the audio analysis instead of Processing + ESS./


Thanks for hijacking the (admittedly dead) thread to promote your project, but your plugin's useless for all but a narrow band of laptop djs.
None of the musicians I work with are laptop people, they use gameboys, DSs, kaos pads, and sing. Some of them use Piggytracker on a PSP.
The best solution is to tie into house audio and work from that. FFT is called Fast for a reason.
You should come to Notacon in 2010, I'm giving a workshop on how to do all of this in the real world, and not be tied down to one music player's plugin infrastructure.
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