Would not go with heavy curtains... too much damping. I put up some thin material curtains and it helped tame high frequencies. I already had venetian blinds, but needed more than that.
Curtains to control high frequency
One wall of my room is glass and I am about to install curtains over it to deaden high frequency reflections.
My question is, if the curtain fabric is relatively open weave linen and I am having them lined with a lightweight baby blanket type material, do you recommend one later of the lightweight lining, or two layers of the lining?
Thanks,
Shaq