What is a studio? There are many different types of studios. It just depends on what field of work you are referring to. There is the dance studio. This type of studio is where dancers go to take classes on different types of dance. Or even where the professional dancer practices for their upcoming performance.
A photo studio, photography studio is much the same thing. It is the place where a photographer has all of his equipment and takes his indoor photographs.The photo studio is usually full of studio lighting, which give the different type of lighting effects that photographers need. A photographers studio needs to be somewhat large due to the size of his lighting equipment.
An audio studio is a studio used by sound designers or people that mix different types of sound or music. Or by people that record music. This type of studio is much different than a photo studio or a dance studio in that it has to be sound proof, and although it needs to be somewhat roomy. It probably doesn't have to be as large as the other types of studio. A sound studio also needs different types of audio studio equipment. Most of their equipment is electronic though. There are places that have every type of studio imaginable, one of these is called universal studio. Universal studio has to have all of these types of studios because they are in the movie business and need dancers, sound designers, photographers and even artists.