Jimbroni Posted July 21, 2004 Share Posted July 21, 2004 Harmonograph's are a device used to draw harmonic ratios. Things people did for entertainment before TV. There are two types a radial one and cartesian one. The cartestian one is essentially two pendulums in which the weight on the pendulum can be raised and lowered to the appropriate frequency. The pendulum have linkages that are connect together at a point which holds a pencil. The pendulums swing perpendicular to one another. The radial harmonograph is similar but the drawing tool is constrained by cyclinder which forces it to rotate rather than move laterally. How cool. http://en.wikipedia.org/wiki/Lissajous_curve These are some pictures of what the musical ratio's look like on a cartesian harmonograph. from left to right and then down you have an octave, a fifth, a fourth, a major third, a minor third, and lastly a whole tone. My Avatar is a cheasily built harmonograph. Here are some better pictures of a rotary harmonograph. http://astronomy.swin.edu.au/~pbourke/curves/harmonograph/ The rotary one makes really intriguing pics. Here is an octave. http://www.airbrushmagic.com/Mvc-416f.jpg Here is a cool little $10 coffee table book, that I found the other day which introduced me to this very cool device. http://coolstufftoown.com/view/0802714099/Books/13837 It contains interesting info on the origins of the musical ratio's from pythagorean temperment to the current equal temperment that is used today. Together all sing their different songs in union - the Uni-verse. My Current Project Link to comment Share on other sites More sharing options...
Guitar Geezer Posted July 21, 2004 Share Posted July 21, 2004 I wondered wwhat your avatar was....initially thought it was an analog theremin Lynn G Link to comment Share on other sites More sharing options...
Bbach1 Posted July 21, 2004 Share Posted July 21, 2004 I would prefer to see sound as a color. bbach Beauty is in the eye of the beer holder. Link to comment Share on other sites More sharing options...
Dennyf Posted July 21, 2004 Share Posted July 21, 2004 http://store3.yimg.com/I/playthingspastllc_1799_108113716 band link: bluepearlband.com music, lessons, gig schedules at dennyf.com STURGEON'S LAW --98% of everything is bullshit. My Unitarian Jihad Name is: The Jackhammer of Love and Mercy. Get yours. Link to comment Share on other sites More sharing options...
Jimbroni Posted July 21, 2004 Author Share Posted July 21, 2004 Spirographs. I used love those things when I was a kid. Together all sing their different songs in union - the Uni-verse. My Current Project Link to comment Share on other sites More sharing options...
stanner Posted July 21, 2004 Share Posted July 21, 2004 Originally posted by cwfno: I would prefer to see sound as a color.i would prefer to have sound measured in pressure levels s AMPSSOUNDBETTERLOUDER Link to comment Share on other sites More sharing options...
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