Custom easing function with bounce

Hi. I’ve been trying to find an easing generator that supports bounce but have found none.

I want to create an easing function that starts as a easeInSine (or quad) and ends as en easeOutBounce (imagine dropping an object on the ground).

Anyone know of such thing, or have an idea of how to combine those.
I’ve allready thought of splitting up the tween in two.

Just realised that the easeOutBounce actually starts a little bit like easeInSine but I would like to enhance that part to make a steeper curve.