After decided the main field as Soundscape, and reading Blesser and Schafer’s publications,(<Spaces Speak, Are You Listening? Experiencing Aural Architecture. London> and <The Soundscape; Our Sonic Environment and the Tuning of the World>) . I have a basic understanding of soundscape, And did a brainstorming to find a research question for my project.
Finally, I decided to focus on the idea of using a positive approach to improve urban sound environment (which Schafer mentioned in his publication).