1, replace the sealing tape
This soundproofing approach is suitable for the old windows, the old window sealing is relatively poor, the window will gradually increase the window seam. Increase, at this time you can replace the window sealing tape, or in the original tape on a layer of acoustic cotton, the effect is the same;
2, do double windows
Ordinary windows will have a very good sound insulation effect after doing two layers, if not street houses, this sound insulation approach is still good. But because of the need to do double window distance is wider, so the distance between the two windows cavity is greater than 10 cm will be better;
3, into soundproof windows
This approach is more costly, and compared to the two-layer windows, ventilation will be a little bit better, and now the main use of double bridge aluminum windows and doors as a soundproof window, the quality and style are very good.