Acoustic treatment for side glass doors / please, need ideas.

Jorsan,

Again, from an overall acoustics balance, they are awesome. They will reduce resonance modes, and allow better room/speaker/woofer integration, which will make everything sound in better balance, and improve the perceived signal to noise by reducing the resonance time fairly broadly. They just happen to be a lot better in the bass than most devices their size.

I'm not suggesting these as your 1 thing to do.

Strongly encourage you to ask GIK for help directly.

But also, you may learn a lot by throwing some pillows and blankets around the floor. It's free and you'll get a better idea of how interrelated room acoustic treatments really are.

Best,

E

For sound absorption, over a glass door or window look for Noise Absorption Coefficient NRC rating.  In absence of this the thickness and density of a curtain would be two factors that contribute to lowering reflections.  For a specific solution for this check out Quiet Curtains tested curtains.  There also maybe be one or two other companies that have this information.  

Drink more scotch.

Try www.acoustic-curtains.com they might have what you need and maybe wife approval as well.