Hi,
This is a compelling and interesting problem for a sound and music nerd such as myself. We had a similar problem and I'm pleased with our solution.
To aid a comparison of challenges, our home dance space consisted of four hard walls of both windows and mirrors, a faux-wood floor, and apx. 12' ceilings with mild acoustical treatment in the ceiling. The space is about the size of a regulation basketball court. We had significant and long echos, reverbs and sound wave cancellations that made it difficult to hear and enjoy the caller, music and, well, chatting between dances.
Raising acoustical (sound absorbing) curtains and/or installing sound baffles and panels are standard ways to resolve this issue but this wasn't an option for us since we may not make permanent modifications in the space. We also have to set-up and break-down quickly: 30 minutes for each. Of course we have a very limited budget.
We solved our problem extremely well by placing (leaning) large z-fold gymnastics mats along the side walls and back wall. The solution was relatively low cost and extremely effective. As a bonus, tumbling mats come in a wide range of colors, so they can be a bit decorative if not exactly high-class, like curtains. However, unlike curtains, they stand up on their own, so we avoid the cost of a hanging system. They are compact, though heavy, simple to store and transport, and hard to damage.
Here are some links, including to sound absorbing curtain systems in case that is better for your dance.
I hope you find a good solution. I personally have concluded that it's crucial for a dance space to have adequate acoustical treatment.
Rob
Organizer, Musician, Novice Caller
Dancing Bears Contra
Conway, AR
- - - - - - - - - - - -
Robert Matson