I came across the Sound Around You website which asks users to contribute sound-bites of the everyday world around them to create a "sound map". The website explains it better than I do...
"The Audio and Acoustic Engineering Research Centre at the University of Salford is building a sound map of the world to investigate how sounds in our everyday environment make us feel.
We’re calling people across the world to use their iphone (or any other audio recorder) to record clips of around 30 seconds in length from different sound environments, or ‘soundscapes’ from a family car journey to a busy shopping centre, and to upload them to our virtual map, along with their opinions of them and why they chose to record it."
The project aims to raise awareness of the soundscape around us and its influence - the project indicates that it may have implications for groups such as home buyers and planners. I could see something like this being quite useful when doing an initial search for a house. Streetview may give you a visual impression of a location but not the whole picture?