Good Materials for Curtains


Has anyone made heavy curtains specifically to add absorbance to a room, and (of course) to block the reflections of glass? If so, what materials did you use. This is such a simple and common acoustical technique, yet I can find little written about what types of fabric (etc) are best. Thanks for your experienced suggestions.
peter_s
I put up some velvet curtains on the front and side walls and they seem to have eliminated enough of the early reflections to increase focus, depth and imaging quite noticeably.
Get the curtains that look best in your room and then get the AudioPrism vibration control dots to tune-in your windows. Velvet curtains??? Yeh, baby!!
If you live in a city, I would use curtains that shield against RFI, something with a metal braid woven inside them.