If Else Easy Ease

[Adrien Girault]

Hi, I was wandering if someone could help with the ‘ease’ in this expression:

I have footage which I’ve linked to the ‘sound key’ values so as to automatically speed up and revert back at a certain value.
but I’d like to add an ease expression to smooth the transition between both states.
The max value is 20.
I’ve tried a few different thing but no luck.

Any input would be greatly appreciated.

>x = time*2;
y = value;
if ( thisComp.layer("Adjustment Layer 2").effect("Sound Keys")("Output 1") > 10) {value = x} else {value =y};
ease(t, value1, value2)