you could site your project next to a babbling brook.  those have a pleasing sort of aural sense to them.  or you could place your project next to an airport.  those have a negative aural sense you would have to mitigate.

the architecture of aural sense meaning you're going to build high stc walls so one loud musician doesn't screw with another?

Near natural amphitheaters.  In Colorado, we've got Red Rocks.  Another is just walking around.  Certain areas have wonderful acoustics even in an Urban environment where the local culture, noise, etc. takes on it's own.  Trains or bridges for instance with that repetitive clack can set a beat.  Maybe the roar of a river over a small fall.  You might watch August Rush (it's a good flick anyway) and how that kid uses the sounds he hears to create music to inspire areas that suit your ideas. Since it's theoretical, submersion in water might be something you can work with given it's ability to transmit sound waves.  A big boat and that thump thump of the engine churning is a great noise to me (triggers nice beach vacation memories too).  Also read up on neuroscience and auditory processing to see how it does influence our focus and awareness by stimulating thoughts, memories, etc. 

Sound isolation in my opinion is an empty head.  Great for 'escaping', not so awesome for inspiring or triggering ideas.  Basically, I think anywhere that can set a 'base beat' 24/7 is a good start.  It's easier to insulate against it than it is to focus and welcome these sounds into your design where it isn't fake or a gimmick like a laugh track in the background.  You need genuine sounds that are in that environment.

I am a fourth year b.arch student .... Am going to take up my thesis in the following semester !! I have chosen a project related to vernacular architecture of Kerala and I have taken a folk lore museum to experiment it... I really need a help in selecting site for my project !!

Very bad reply.... I thought this site was for helping architecture students !! U don't have any rights to state that am a lazy students .... I never asked anyone to select a site for me rather I asked a guidance to select site ... anyways am on the process .... Please don't encourage people who discourage others .... a kind request !

Have you ever heard of acoustical engineering?

https://www.youtube.com/watch?...

i would just pick a generic urban or institutional campus context. selecting some idiosyncratic wilderness condition is a red herring. explore how your ideas could be applied very broadly in normal and commonly utilized site conditions.