Doing a bit of searching led me to: https://darklantern.proboards.com/post/16119 https://darklantern.proboards.com/post/16119 https://acousticsfirst.info/tag/

Doing a bit of searching led me to: https://darklantern.proboards.com/post/16119 https://darklantern.proboards.com/post/16119 https://acousticsfirst.info/tag/ken-fritz https://acousticsfirst.info/tag/ken-fritz > The general thoughts that went into the overall plan in designing this room was to accommodate not only audio but video. The acoustic plan was to eliminate as many parallel surfaces as possible. The side walls are skewed out by 2” from front to back to help reduce slap echos. Both the front and the back of the room incorporate a curve design that would help scatter sound. I replicated the ceiling design from a concert hall in Osaka, Japan. The ceiling to floor dimension at the front of the room, 11.5 feet, expanded in five different planes to 17.5 feet at the rear of the room. > Acoustic testing was then done by a Richmond company, “Acoustics First”. ETF measurements were taken and sound panels were then designed according to a patented algorithm. The panels were then built by Owens Corning according to prescribed specification.