HELP – Jitter Matrix & Sound Files

Dec 4, 2013 at 11:08am

HELP – Jitter Matrix & Sound Files

Hello Max community! This is my first post, as I’m extremely new to Max. Basically, I’m starting a project that would require me to understand the use of a live video feed as a sound generator. Plus I need to understand how a video matrix works…

E.g. I want to be able to split up a video matrix, and then be able to trigger sound files from that particular matrix information. Would anyone be able to show me how this is done?

Many Thanks!

Dec 4, 2013 at 4:53pm

Hey Manly,
Definitely check out Andrew Benson’s article on the subject matter.

There’s a lot of ways to do things in Max. Check out the Jitter tutorials built into the application.

Here’s something I cobbled together as an example. You can unpack a video into it’s rgb matrices and then monitor the mean value to either drive or trigger sound. Check out the help files for the objects in this patch to learn more.


– Pasted Max Patch, click to expand. –


Dec 5, 2013 at 8:23am

Hello Todernst,

Thanks for your reply, it’s been such a help!

Although I need help from a few more things…

In the patch I can see that when I move in the view of the camera it triggers some noise. Basically here’s what I’m thinking;

I’ve got the ‘jit.rgb2luma’ object, and I’ve cut them up using the scissors object. Now how do I go about triggering a sound file from specific noise from one of the windows?

For a basic example, say the video is cut up into 4 squares, and if I trigger noise by movement in the top left square, it would trigger say a drum loop. Then noise from the bottom right square would trigger a short guitar riff. How would I go about doing that?

Feel free to shoot me down and say I have no idea what I’m talking about..haha


Dec 5, 2013 at 8:25am

Or…is there a simplified way of achieving this?


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