Way back machine here a year later..
I have a large roon with 9ft ceilings and a 52 inch fan hanging from the ceiling 12 feet behind my chair. I am always on the hunt for acoustic enhancements and have used flat finish paints to calm hot spots. I constructed simple devices and placed in the room to increase laminar flow and to increase focus within a already large and focused soundstage.
In order to explain this journey in short form I decided to treat my fan blades and use it as an acoustic suppliment. It works as auditioned for many friends and a few family members. Finding that low sheen wall finishes soften and may even reduce shear wave energy I applied those ideas to the rotating fan blades. I use a black paint that contains no titanium oxide and added my own mixture of metals that have a low shear wave velocity. Mixed this all into the gallon of store bought paint returned to the store and had it re shaken and not stirred. I applied 3 heavy coats to both sides of the blades. Instant improvement on all aspects that are important to me. Since this 1st time, I purchased a standmount fan that has 16 speeds and a dc motor that is whisper quiet. This stand mount fan is placed dirrctly in line with my my chair 8ft back. The blades are treated in the same manner as the ones on the ceiling. Again the same type and amount of improvement as the ceiling unit. The stand mount sounds as if it has slightly better focus. I believe the fans overcome boundary effects caused by furniture,walls and the audio chassis and speaker cabinets. With the fan running in reverse and behind me the airflow has music attached and moves more easily around obstacles including my own body. Increase in laminar flow is most likely. Tom