School project, not a clue how to use MAX/MSP/Jitter PLEASE READ AND REPLY

Dec 4, 2011 at 8:58pm

School project, not a clue how to use MAX/MSP/Jitter PLEASE READ AND REPLY

Hi, for a class project we have to create a program in Max. My team pretty much left me out to dry on doing it, and I have no clue how to use this software. I have a bunch of premade patch things, and 2 days to create it. Hopefully if I get some help from you guys, it won’t take that long.

What I need it to do.

Play a video of rain on a loop with sound.
When my microphone hears a noise above a certain sound level, it plays a thunder sound (maybe with a lightning picture overlaid onto the rain video if thats possible)

What I would LIKE it to do in addition to the above.
Using frame differencing and this patch my teacher gave us called Quadrants, I was hoping that the more movement it registered in the top 2 sections the faster the video would play. Then if it registered a certain amount of movement in the bottom 2 sections, it would play a quick splash sound clip.

The idea is that the people in front of the webcam are interacting with each other and the program, “creating” a storm.

Any input on how to do this would be fantastic, I’m using a trial version of Max 6, an Imac with an iSight camera. If you can help and need any other information, please respond and I’ll get it to you ASAP.

#60462
Dec 4, 2011 at 10:24pm

jit.qt.movie for the video
snapshot~ and >~ for detecting audio threshold. If above threshold, sfplay~ your thunder sound. if you want overlaid lightning, use a second jit.qt.movie and combine them with jit.xfade.

changing video speed: “rate” message to jit.qt.movie. If you have this “Quadrants” patch already, take its output and use it to change the rate. Same for the bottom quadrants, if it goes past a threshold, play your splash sound.

look to the [scale] object to get the parameters right when taking one type of numerical data and converting it to a different one, where the range needs to be different (i.e.: if you get “300″ for an X-position, you probably don’t want to set the movie rate to 300, but more like 2.5 perhaps. Experiment…)

note: jit.qt.movie playing backwards is possible but the sound will be weird at best and cause playback problems at worst, at least I remember it doing this. So if you want to change the speed a lot, use a movie clip without sound, then play a sound file separately.

Check the help files for all these objects, you can do it!

#217609

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