[Sidefx-houdini-list] music to geo
jed at jedschwartz.com
Sat Aug 25 22:29:21 EDT 2007
Thanks for the great feedback- (no pun intended)
I got great results by creating a series of Pass Filters, setting the
filter to Band Pass, then set the range value on each to control the
tone/pitch - I also used the envelope chop to isolate the frequencies
before exporting to the y chan of a series of grouped out points.
Very easy to set up, visualize and tweak the resulting wire-
A couple issues with H9 and chops, it seems that the export node
"open floating operator chooser" isn't working- the scroll bar does
not scroll down, the window has to be expanded to see the full list.
Also when I choose a target node the path choice prints out in ()
instead of " " ..of course this doesn't work unless you edit the " "
into the node field- I'll post this on the H9 forum-
On Aug 25, 2007, at 11:05 AM, Marcos Kotlhar wrote:
> If all you want to do is deform geometry to a chop wave like sound,
> simple chopf() on a point sop will do the trick. In my experience a
> combination of Parametric EQ and the envelope chop do a great job
> at isolating sound frequencies just keep in mind that low sound
> freqs happen around 50hz and high ones do all the way up to 30khz.
> The only problem with using chopf() is that you get deformation of
> the entire surface. If you want a wave "travelling" effect you have
> to mess around with our geometry in chops.
> On Aug 24, 2007, at 1:39 PM, Andrew D Lyons wrote:
>> CHOPs comes with band pass. low pass and high pass filters. You will
>> need to take artistic license with representations in the model
>> obviously, but these CHOPs should help you isolate the part of the
>> signal that will drive the animation. Various envelope, trigger and
>> filter CHOPs should help build a channel that you can use to amp up a
>> pre-contrived animation on your model.
>> Good luck!
>> On 24/08/07, Jed Schwartz <jed at jedschwartz.com> wrote:
>>> I'm working on a shot that illustrates the inner workings of the
>>> cochlea (hearing)-
>>> I'm trying to figure out the best way to drive frequency waves
>>> the surface of a long narrow plane via a sound track through chops-
>>> The higher frequencies (notes) need to stay to the left side of the
>>> plane and lower notes need to show up on the right with mid tones in
>>> I thought I remembered seeing an example file of something like this
>>> some years back- can't seem to find it- Any thoughts or links to
>>> examples would be appreciated!
>>> Sidefx-houdini-list mailing list
>>> Sidefx-houdini-list at sidefx.com
>> Andrew D Lyons | Digital Artist | http://www.tstex.com
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