The effect on your sleep by sound relies on numerous different factors, such as the type of noise and your own personal preferences. Some people may find the distant rattling of a train relaxing, some might drift off to rain hammering against the window, and some may need complete silence to ensure they can get to sleep.
Within your house, there are all sorts of sources of potential interruptions to your sleep. A pet, your TV and other occupants can be internal sources of disruptive noise, whilst external sounds may include the weather or local traffic. All of these could be potentially detrimental to your good night’s sleep.