The acoustic glass is in, but the room is less than soundproof, much less.
I built a VERY soundproof wall, and the acoustic glass is the best stuff, so what is the problem?
Turns out the AC vents on the ceiling in the old living room and dining room are connected.
This is the vent in question, this is on the ceiling of the new room I made, at the far end just over, or just outside the wall there is the other vent in the larger room.
A close up, you can see the light there, that light is coming from the vent in the outside room.... sigh....
The plan is to make a cover or patch that goes over this vent to block it off.
There is another vent on the other side of the room that connects to the main AC unit, not to another vent outside the room so I'm hoping that will be OK. I'll get the AC guy to adjust the floor so that it directs more air to the one functioning vent, I hope they can do that.
I put two pieces of 5.5mm (1/4") MDF together with some of the Green Glue noise canceling compound that I used on the wall I built, the MDF is dense like drywall, so I hope it works.
You can see some of the green glue oozing out of the edges.
I put a simple edge treatment on the panel to make it look nicer.
Painted it to match the ceiling.
On the side that goes against the ceiling and the AC vent around the edge of this panel will be come acousting strip, like weather strip but designed to cancel sound (read expensive).
I'm off that job today getting ready for the trip to Osaka with Playground of Hope for a week long build, so I'll have to wait until tomorrow to get this installed and see how it works.
We also decided to cover the entire existing inside wall of the room with sound deadening foam, floor to ceiling as well as one large panel on the back wall opposite the glass, this should make the room more sound proof and cut the bounce down in the room as well.
Wish me luck!
Cheers!