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Original audio fcurves were created in the Driver tab (after adding driver to the object property and baking sound). Eventhough this creates fcurves in the driver tab, the animation just doesn't play. Solved the issue by baking audio fcurves from the GraphEditor instead(after setting keyframes for the object property).


In the 3D window go to the menu Object - Animation - Bake action, so to bake the sound created animation into an editable curve.


I just discovered custom functions which are a way to expand driver functions using python. This way I can use any complex geometrical calculation in a driver with the help of numpy and math.


Expressions containing: variable names: only ASCII characters. literals: floating point and decimal integer. globals: frame constants: pi, True, False operators: +, -, *, /, ==, !=, <, <=, >, >=, and, or, not, conditional operator A if B else C standard functions: min(), max(), radians(), degrees(), abs(), fabs(), floor(), ceil(), trunc(), round(...

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