Different areas of your home require different treatment to reduce or eliminate noise. Some noise is annoying when it comes in, such as through the attic. Other noise may be annoying to others both inside and out of the home. (Musical instruments, neighbors, air and street traffic, etc).

For these reasons, differing treatments of the house are needed, using a variety of materials and construction techniques. While it is far better to make the investment in soundproofing when the home is being built, rather than doing a retrofit, it's not impossible, just a bit more difficult.

-- Tips courtesy of HomeAdvisor.com