Resilient channels with one layer of gyproc, filled and taped. A second layer of gyproc installed going the other way so that that it covers the joints of the first one, filled and taped. Cover that with a rough stucco finish. Avoid suspended ceilings is my recommendation. You need both mass and resilience.
Unfortunately you can't have those nice coffered ceilings in a low basement, I don't know how good they are for acoustics, but they sure look nice.
Unfortunately you can't have those nice coffered ceilings in a low basement, I don't know how good they are for acoustics, but they sure look nice.