在现在的窗户的基础上再加一层玻璃, 效果显著

防噪音的效果最关键的因素是: 最外和最内玻璃之间的空间的厚度.This is by Physics.

下面的公司有些产品可以参考. 据另一个朋友说, 他们社区

(同样问题)有许多家早就研究过, 使用了此公司的产品, 他们说效果很好.

如果你最终用了这种产品, 请在此汇报一下效果, 我很想知道.

 

Below is copy of my email to one of our customer who had the same concern with the house they were buying:

I found a company specialized in soundproofing windows:

http://www.soundproofwindows.com

It has lots of useful knowledge in the website. I think it's a good way since it essentially greatly increased the airspace between the glass panes.
Don't know the cost though.

This is another forum that contains some useful discussion about noise reduction window and the rating, pay special attention to posts by Oberon
http://ths.gardenweb.com/forums/load/oldhouse/msg051429468315.html?26

Another useful article: http://www.jeld-wen.com/catalog/windows/about-windows/338-acoustic-performance-in-windows
Yet another: http://answers.google.com/answers/threadview/id/507807.html



Basically, ask for STC value (bigger is better) of the window.


One thing that you can consider is to install non-opening windows (much better than operatable window) in the master bedroom, but leave the
current window in the bathroom the way it is now. This way you can still have ventilation through the bathroom and noise reduction is greatest.

But my guess is a second window (casement or double hung) in addition to the original window would do a decent job to cut the noise down,
similar to what it is done by http://www.soundproofwindows.com