MATRIXSYNTH: Synthesizers.com Oscilloscope Lissajous demonstration


Tuesday, September 26, 2006

Synthesizers.com Oscilloscope Lissajous demonstration



YouTube via AndySquirrel. Sent my way via Tim.
Posted by matrix at 9/26/2006 01:38:00 AM
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3 comments:

  1. Anonymous9/26/06, 4:34 PM

    What setting is that scope on? I cant get those shapes on my old Heathkit scope. It looks really cool!

    ReplyDelete
  2. Anonymous9/26/06, 9:36 PM

    First, you need (at minimum) a two channel scope. If you do have a two channel scope, it needs to have an XY mode. (I also have an old Heathkit, which is a two channel, and does have an XY mode so you may be in luck).

    In XY mode and nothing connected to the inputs, center the 'dot' in on the screen with the position controls. The trace doesn't sweep in XY mode, because input 1 controls the vertical, and input 2 controls the horizontal.

    If you connect input 1 and 2 to the sine wave out of two different VCOs set to the same frequency you should see a circle on the scope screen (make sure the gain settings for the two channels is the same).

    Next change the freqency of one of the VCOs and see what happens.

    Further experiments: use different waveforms, use filtered waveforms, sweep the filter, put one sig through a VCO and control it with an LFO, see what a ring mod does, etc. Lots of things to try...

    ReplyDelete
  3. Anonymous9/27/06, 6:43 AM

    Yesss! that is my video! Thanks for putting it up! :)
    -Andy Squirrel

    ReplyDelete

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