Peter_s, is the window mounted inside a frame? If so, I wonder if inside-mount blinds (high-NRC cellulars or partially-open wooden) would reinforce the curtains sufficiently to stop the ring.
Wooden blinds vs cellular shades for acoustics
Standard old school advice for large window acoustical treatment seems to be "heavy draperies". Some cellular shades (Hunter Douglas, Bali) have high factory-rated NRC (0.60 or better). That's about the same for what little I've found for draperies.
Recently, I heard that partially-open wooden blinds are best for acoustics, acting through diffusion, rather than absorption. Opinions? Experiences?
Thanks
Recently, I heard that partially-open wooden blinds are best for acoustics, acting through diffusion, rather than absorption. Opinions? Experiences?
Thanks