Forums > MaxMSP

Recording a Scratch – Video on YouTube

August 13, 2008 | 8:52 pm

I put a quick draft video of my turntablist software doing some live scratch recording onto youtube. It uses Ms. Pinky and some tone generators to get crossfader and vinyl motion.

http://www.youtube.com/watch?v=S8izg3jHIfI

I figured some people here would find it interesting. Now I need to work on my DJ skills (or find someone who already has some) so I can show how fast the response is : )


August 13, 2008 | 9:03 pm

Awesome Aaron! Capturing the crossfader is brilliant.

Dan

At 2:52 PM -0600 8/13/08, Aaron Faulstich wrote:
>I put a quick draft video of my turntablist software doing some live
>scratch recording onto youtube. It uses Ms. Pinky and some tone
>generators to get crossfader and vinyl motion.
>
>http://www.youtube.com/watch?v=S8izg3jHIfI
>
>I figured some people here would find it interesting. Now I need to
>work on my DJ skills (or find someone who already has some) so I can
>show how fast the response is : )


Dan Nigrin – Defective Records
202 Hack / PC-1600 User / VSTi Host / Jack OS X / Major Malfunction
http://defectiverecords.com

http://jackosx.com


August 14, 2008 | 12:06 am

cool. I tried the scratcher a few months ago, without the record obviously.It was good fun but I’d like to see what it can with vinyl. Looks like it could be useful. Well done.

I got skills, mspinky and gonna have a lot of time on my hands in about two weeks. Well up for testing if your like.

Regards
John


August 14, 2008 | 1:38 am

sweet!


March 23, 2013 | 4:12 pm

I made identical project for my BA Music Technology back in 2005, I was using a micro controller to generate a sine wave , loop through the mixer to detect cut and fader move (I was actually detect slow and fast volume drop to differentiate them).
then a wheel placed on the turntable platter provided velocity info to the micro controller that was in turn generating MIDI pitches, the crossfader cut was generating MIDI Note ON and OFF.

I got a B+ :)

I really do like your skrasoft man, and I d be eager to know what type of object you used to display the vinyl motion so smoothly.. ?


April 22, 2013 | 7:20 pm

In the old days (Max 4 era), I was using a jsui object and stroke commands to show scratch data. It looked good but had an insane CPU load when dealing with thousands of points. When I went to the real time scratch recording system, I had to use something more efficient. Jit.gl.graph barely registered on my CPU, and it looked decent. That’s what’s in the video. I’m attaching a patch that shows the line drawing system by itself.

Note that one of the reasons it looks smooth is because the data itself is smooth. Hands don’t change speed precisely and instantaneously, so the recorded data never has sharp edges. Corners in the data don’t look very good (see the square wave example in the attached patch).

If I was doing this from scratch in Max 6, I’d try the new mgraphics features. They take a lot less CPU than the old jsui stuff while handling corners better than jit.gl.graph.

– Pasted Max Patch, click to expand. –

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