<![CDATA[Shoot particles from audio driven spline]]>Hello
I have a spline that has an audio effector that drives the Y movement of the point. The Spline revisualises the audio wave forms.
I want to emit particles from the peak areas of the Spline (peak points of the audio wave), in a fashion where there is no emission is 0% where the spline points doesn't move at all , and 100% when it is in a defined peak area. The result will help to build a sort of sound ghost made of particles.
I hope it is not vague. I am joining the file and a reference image to show what I mean
Many thanks

https://we.tl/t-dfBFCNREVnnkD1OT

]]>https://cineversity.forums.maxon.net/topic/2384/shoot-particles-from-audio-driven-splineRSS for NodeFri, 12 Jun 2026 18:34:59 GMTThu, 11 Jun 2026 12:02:25 GMT60<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 13:31:39 GMT]]>Fantastic

]]>https://cineversity.forums.maxon.net/post/9325https://cineversity.forums.maxon.net/post/9325Fri, 12 Jun 2026 13:31:39 GMT<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 12:34:59 GMT]]>I added a Vertex Map on the Spline with a Box Field. I am using that Vertex Map in the Spline Emitter to ONLY emit from the parts of the spline that are outside the Box Field.

https://www.dropbox.com/scl/fi/5cofbyyq73l2qbszk10tj/sound_base_ctrl_single-Velocity-Math-Vertex-01A.c4d?rlkey=7oogulihz5io9s5zpyekdnt9n&dl=0

]]>https://cineversity.forums.maxon.net/post/9324https://cineversity.forums.maxon.net/post/9324Fri, 12 Jun 2026 12:34:59 GMT<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 12:03:01 GMT]]>amazing, many thanks,
I noticed it is still emitting at areas where audio waves are zero though

]]>https://cineversity.forums.maxon.net/post/9323https://cineversity.forums.maxon.net/post/9323Fri, 12 Jun 2026 12:03:01 GMT<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 11:50:33 GMT]]>One way is to use a Math Modifier in the Particle Group set to Fields that uses the same Sound Field to Add velocity on the Y Axis

https://www.dropbox.com/scl/fi/mzoawqf2if5mlpwzifbvt/sound_base_ctrl_single-Velocity-Math-01A.c4d?rlkey=1e18dwwdh76jgp84gmyvbpy2e&dl=0

]]>https://cineversity.forums.maxon.net/post/9322https://cineversity.forums.maxon.net/post/9322Fri, 12 Jun 2026 11:50:33 GMT<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 11:30:09 GMT]]>Hello legendary noseman, I think the best expression of what I want to achieve will be "how to control the speed of the particles using audio form that affect the spline deformation in Y ", it is 100 at a certain peak and zero at the horizontal status

]]>https://cineversity.forums.maxon.net/post/9321https://cineversity.forums.maxon.net/post/9321Fri, 12 Jun 2026 11:30:09 GMT<![CDATA[Reply to Shoot particles from audio driven spline on Fri, 12 Jun 2026 11:20:47 GMT]]>I'm afraid I'm not sure what you want to do.
You don't want emission at 0% sound and want emission at 100% sound. What happens from 1-99%
Some sort of reference video would be helpful... or a series of still frames to show the progression

]]>https://cineversity.forums.maxon.net/post/9320https://cineversity.forums.maxon.net/post/9320Fri, 12 Jun 2026 11:20:47 GMT