How to bake multiple audio sounds to f curve?

Question

I want to add three different audio clips to same character's mouth using bake sound to f curve. But I am able to add only one sound clip. when i try to add second clip, it replaces the first one. Please help me.

Answer 1

Bake to custom properties to drive from.

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As an example I've made 3 custom properties on the default cube. Add a keyframe and bake to sound for each.

Image. Baked prop, added keyframe to prop2.

Now let's say we want to drive the cube's x location by these props.

Add a driver to the location.x field. Hover over with mouse, right click, add drivers > manually create later single. Put the graph editor in Drivers mode, select the location.x driver, hit N and choose drivers tab.

with scripted expression chosen (default) and the "use self" option checked, can type (or paste) in an expression, where self is the Cube object, adnd self["prop"] is the value of baked property "prop".

The following sums the three.

self["prop"] + self["prop1"] + self["prop2]"

or another way using sum

sum([self["prop"], self["prop1"], self["prop2]"])    

average

sum([self["prop"], self["prop1"], self["prop2]"]) / 3

the maximum.

max([self["prop"], self["prop1"], self["prop2]"])

Or if you cannot add the properties to what you are animating, can set up the drivers the old fashioned way with variables. Add a single property type variable for each, select the Cube as the target object and the datapath is ["prop"] for "prop"

The expression uses the variable names, I've used p0 , p1, p2. Similarly to above, the sum would be.

sum([p0, p1, p2])

or by choosing 'SUM' as the driver type.