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Smoothing techniques

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Hello! I've got this: Image and video hosting by TinyPic But it runs very *unsmooth*. Does anyone knows a way to make it better? It reacts to every little change in the music. Scaling down the Update rate is not good, because I want it precise. What is a good smoothing technique?

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You mean something like a low-pass filter?
const lambda = 0.1; // number in (0,1] which controls how quickly the filter forgets its state
new_display_value = (1-lambda)*old_display_value + lambda*new_data;

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