Windows in a listening room

You should have my music room!
Seriously, take it!

I have 4 walls of glass.......
It is basically the sun room add on to the house. So 8ft glass sliding doors open out to it, then each wall is 3ft solid lower then 5 ft window all the way round.
Oh and it is tiled floor.....

So wood blinds on every window set just past halfway closed. 3 big squishy leather sofas and cushions. Huge deep thick floor rug. 

Made it very liveable and I am constantly impressed with how good it sounds considering how diabolical it should/could be.

It's hard to say without listening.  I can say the very best room I was ever in was a small room but was very, very dead acoustically.  Overall, I would lean to highly damped rooms than live ones.

Agree with absorption. Acoustic panels all four walls plus the ceiling. Thick area rug over wood floors. No echoes from speaking or hand claps. Sounds wonderful.

Glass is bad for sound. For starters it’s very transparent to rf. It also rings like a banshee and flutters like a wounded duck. The room is like the inside of a drum. Some ideas: Marigo VTS Dots for Windows, crystals, just open the windows, that helps the sound. There’s always Flying Saucers 👽 for Windows for the more adventurous, or the Silver Rainbow MagnaBlock from PWB Electronics, only $20.  

Whilst using absorption one must always be on the lookout 👀 for what Acoustic Revive refers to as “over-dumping.” It can sneak up on you, before you know it you’ll be living with over-dumping forever. It’s an excellent example of expectation bias, that absorption is always good.

Windows let in noise and light. I shuttered mine, more like doors really, solid MDF panels dramatically reduce noise and light. Closed flush, its almost like no windows at all.

When I first put them on it was fun to bring people in the room, close the door, let them get used to the quiet. Then close one shutter. Watch the look on their face. The noise that comes through a window, we are so used to it, its so nearly white-noise diffuse, its hard to notice until its gone.