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
shaq
Use hanging vertical blinds.

They can be adjusted to let some light, and vary the high frequency absorption and refection.

Curtains absorb too much sound. You need some sound reflections.
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.
If you use vertical blinds I strongly suggest some with fabric on them vs. a solid vinyl.