I have added sound proofing to ceiling assemblies before.
If you want to dampen the sound of running from your ceiling you should plan to spend $50k+ and not expect perfect results - you'll still hear running.
If $50k+ is your budget then,
- Blow in roxul insulation into the existing joist cavities ( make sure no knob and tube wiring ).
- Hat track installed perpendicular to joists ( ~2" tall )
- Sound isolation clips
- Two layers of 5/8" thick drywall green glued together installed with seems perpendicular (add another 1 1/4" )
- Get the ceiling to wall joins caulked (no sound path)
- Ensure you have no potlights.
I have lived in a house with kids above on 2" concrete 1" hardwood. Ceiling assembly was just 5/8" drywall, nothing in the joist bays.
I have also lived in hardwood on 5/8" ply, joist bays roxul (safeNsound), hat track / sound isolation clips, 2 layers of drywall tapered seams with green glue. The green glue detail was crap and not done by professionals and not according to how many tubes you should be using per 4x8 sheet.
I have also been in houses with just hardwood on empty joists and you can hear all the conversations. You can hear people walking and where they walk. I imagine if someone jumped off a bed onto the floor your ears would rupture.
The 2" concrete assembly was the quietest. All assemblies you hear the kids running and if they jump off a bed onto the floor it sounds like a bomb went off. The sound noises that you don't care about music / talking are quite muffled or close to completely blocked ( sound goes out windows and comes back in more than through floor assembly ).
I'd love to know how the professionally installed 5/8" double drywall with green glue and sound isolation clips and properly separated ceiling / walls performs.
Good luck !