Passive Multidimensional Input

Any musician who has ever used a computer to create music will tell you that while this technology is more than capable of producing great music, it is always a much more intimate experience to create by physically playing an instrument. In an effort to bridge this gap, [Randall Jones] has built a passive multidimensional interface that uses multitouch input to create an intimate experience that rivals that of a traditional musical instrument. While this concept may seem very complicated, the interface is made of only copper strips, rubber, and wood. At $50, this interface was designed to be inexpensive and appears to be very easy to use. As seen in the video, this interface can be used as anything from a drum to a multitouch synthesizer.

[via Make]

Comments

  1. lando says:

    this seems like a pretty kool project and at just $50, thats awesome.

  2. Morden says:

    Wow, just wow, great idea and implementation. The responsiveness and pressure sensitivity when compared to visually done multi touch is daunting.

    I’m going to go home from work today and glare at my multitouch system with geek shame.

  3. TheYikes says:

    Thats awsome! i love how it reacts to varying pressure. I can think of a heap of uses for this little beauty!

  4. Jules says:

    As The same kind of tool that the reactable do, that is very cool to see the 3D graphical at the same time of the user touch.

    http://www.openprox.info

  5. happypinguin says:

    Awesome.

    I’m amazed by the responsiveness of
    this touch device.

  6. rdagger says:

    Very impressive results. Are there any occlusion issues? It seems that if you used more than 2 fingers there are some cases a third press might get masked or worse incorrectly cause the other 2 points to show increased pressure.

  7. gerwindehaan says:

    this reminds me of the Unmousepad device I tried this fall, made by Ilya Rosenberg and Ken Perlin from NYU. (see http://www.youtube.com/watch?v=jxibIAHndl0)

  8. rasz says:

    $50 … plus $1000 DSP box for signal processing

  9. happypinguin says:

    @rasz
    I think you can do the processing
    on your computer instead.
    It would not be resource intensive
    AFAIK.

  10. Blastar says:

    I would say that its almost innovative.

  11. rasz says:

    happypinguin there is 400KHz sampling mentioned in the vid, that means expensive sampling card for your computer (or 848 TV card if you know how to hack one), but you still need to write the DSP code. Looking at the link there is no code published (apart from some libs for the commercial touchpad called MSP)

  12. Morden says:

    @Raz

    Granted this is also geared towards audio and instrument enthusiasts. not your standard instructables freak

  13. DeFex says:

    Ok i understand how i could do this. i have creamware scope SDK(lots of DSP on a PCI card) and a spare fostex cheapo ADAT interface.

    sending 10-20 khz audio waves, easy.

    send the returns to the front end of a vocoder to get seperate control signal for each frequency.

    after that is the “centeride function” im not so sure about that :p

  14. goldscott says:

    It would be interesting to add some sort of display overlay to the device for visual cues/feedback, making an even more immersive, intimate controller.

  15. cyanide says:

    how about a stringless guitar using 2 of these panels, one for where you pluck the strings and one for where you hold them down. use copper wire on top instead of copper strips.

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