Noise Reduction
Particular window furnishings can effectively reduce the transmission of sound between external and internal areas, however, with the suppression of external noises, other requirements that you hope to satisfy, may be unable to be met.
Considering how important this requirement is will easily allow for the selection of particular options that can help address all of your requirements to some degree.
Regardless, there are obvious limitations to the amount of noise reduction any window or door furnishing can achieve without affecting all other requirements you may have or expect, so ensure sure you consider and query the practical applications of the product in your home or workplace.