Windows in a listening room


My 12.5' x 15' listening room has an 8'-wide patio door on the long side. I was concerned that the large glass area might be hurting sound quality, and even got an estimate on a sound-absorbing curtain—about $600. Then I watch this video1, and now I don't worry about it any more.

http://www.acousticsinsider.com/window-behind-speakers-causing-problems/?utm_source=Acoustics+Inside...

Thought others might find it interesting.
john_g
steakster  If people are reading this it work it can be hard to view a video. BUT WHY AREN'T THEY WORKING?
Try a large area rug and some large wueen size bed comforters. (cheap ones of course).

i live in a 50+ year old home (on slab) and i'm worried about the neighbors complaining. so i've been juggling these ideas too

I used to have a media room in my basement, fantastic  to listen to my  stereo  or watch a movie in 7.1.Now I moved have a town house with cathedral  ceilings and a balcony. The room is like a concert hall,the windows have vertical shades and it's no problem. 
Look at my system’ page. I use a half sheet of (Dacron) hung behind my thin curtain. Low cost, high value. Can't tell it's there.
Marigo large white dots on window and Hunter Douglas fabric vertical blinds is the way to go for best sound.