Hi everyone, as part of a symposium project I am creating an audio experience meant to model the ambient sound of a city with pure data. I have been looking into creating the doppler effect for the cars in my patch. I'm trying to implement 2 patches using a variable delay line to derive a doppler effect. (I am ending from the car patch to dopvelocity and then doppler delay to dac~... It does not seem to work. Could anyone shed any light on this?