Treatment for Ceiling in exposed Living Room-Acoustics Forum-Acoustic Fields Forum

We removed the drywall to expose the trusses in our living room. The floor above is 3/4 plywood bedrooms. The trusses are 2 feet tall and add height to the room. We just want to reduce the voice level coming from upstairs while leaving the trusses open (stained).

I’d like to add a layer of sound blocking and then beadboard.

Need suggestions of what to use.

Thanks