Disney has always been on the forefront of innovation, in my opinion, to improve it's parks and create a better immersed experience for their clientele. 3D printing is definitely one of those tech innovations that is on a boom right now and Disney is using it to their advantage on many levels.
One of these studies includes printing any object as a speaker. Disney has developed a a 3D printing technology that can prints an entire surface of an object that will emit sound. That would mean any object that is created can essentially "talk."
You don't need to ask experts to speculate why Disney would think of creating such technology. Think about all of the Disney characters out there that can now be printed and talk to their consumer base directly without visible speakers or strategically placed speakers. The object itself can now be the speaker! Pretty cool if you ask me.