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    Shoot particles from audio driven spline

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    • R
      resort-sand last edited by

      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

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      • noseman
        noseman last edited by

        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

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        • R
          resort-sand last edited by resort-sand

          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

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          • noseman
            noseman last edited by

            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

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            • R
              resort-sand last edited by

              amazing, many thanks,
              I noticed it is still emitting at areas where audio waves are zero though

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              • noseman
                noseman last edited by

                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

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                • R
                  resort-sand last edited by

                  Fantastic

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