3 mic sound direction locator solution?
I don't know of a canned chip to do this, and that would be off topic anyway.

They way to compute relative position is to look at the time of arrival.  Sample each microphone input at high speed and keep recent samples in memory.  When you decide that a loud event has occurred, you run correlations between the stored samples to decide the time shift between them.  From the time shifts, you can compute the relative location, knowing the locations of each of the receivers.

Note that in the general case it takes 4 receivers not in a plane to resolve full 3D.  Your three receivers will resolve one less degree of freedom, like direction without distance in some cases.