pugsandbunkers

Hi folks, I am wondering if anyone can help me out here. I am pretty new to using the software but have ran through many tutorials over the course of the last year at university. I need a little help with an idea I have. What i look to do is create a drum machine that will use samples and play certain presets. I am able to get this part of the patch up and running just fine. The way I am looking to use this drum machine is to have data from pixels colour change from a video to represent movement. The more movement based over time = the more percussion that is selected using presets. Now I have managed to get to a stage where I am using a matrix of 4 x 4 on the video screen and getting colour data from a monochrome version of my original video. What I want to do with this data is set a limitation whereby I can determine the range of 0-255 into 8 levels (for 8 drum machine presets). For each cell in the matrix I am hoping that this range will take into account that there is alot of movement between 2 periods of time and hence will trigger that a preset should remain at its current level or increase/decrease to reflect the movement on screen. I feel I may not have describes this very well but I will upload the patch so far and hopefully that will make things a little clearer.

The main issue I have really is the linking between the data extraction and the preset for the drum machine. I don't need each cell to trigger a specific drum, rather just work as a value that can determine enough change over 8 ranges between 0-255 so that all cells can average out a number and thus determine which preset shall trigger next. I am hopeless with the maths involved and do not know how easy or hard this may be.

help-with-numbers

You need to look at the jit.scissors object with a 4x2 column/row to divide the video into 8 sections, if you then take the colour data from each section you can manipulate the percussion to work with the individual section.

you don't need all those explicit getcell messages, just downsample and spill the matrix into a list:

not sure what you want to do with the numbers, but once they're unpacked you can route them to trigger different sounds or whatever

Thanks guys, this has helped me a lot. Terry, I looked at your patch here and I agree with what you mean, this looks a lot cleaner and more helpful to what I need for my system. As I previously said, I have little knowledge of the software and feel a little too persuaded to just copy and paste a multiple series of objects. What you have done is much simpler however I don't have too much understanding until now. I am going to try and use the difference in luma data and count the data change over a period of time for each cell. This will then determine on average if enough movement can portray more action in a drum loop. I will post up the results to let you see. This has really helped me though so I thank you guys.

Help with numbers