It shouldn't be too hard to do this integration with basic pole / zero objects. A problem using integration only is the lack of mechanical damping. A real speaker goes back to x=0 if no signal is present. A simple integrator doesn't - so the 'simulated' cone would just fly away slowly. So some damping should be included in the integrator to make it stable. However I'm no expert on designing filters yet...
[rpole~ 0.999] does it very well...
haut-parleur-doppler2.pd
Description: application/puredata
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