Room treatment products at RMAF

In viewing the positive feedback show pictures I didn't see much in the way of room treatment, but there was some. From what I noticed there were a number of rooms that appeared to have what I think was a room acoustic control product. Looked like half rounds that were black, and raised up off the floor on metal tripod stands as seen in this picture.

http://www.positive-feedback.com/Issue45/rmaf/P1014226.jpg

Does someone know what these are?