The brief
STI > 0.85
in a room with RT60 over 6 s
Problem
- RT60 over six seconds; very low intelligibility
- Multiple audience shapes depending on mode of use
Solution
SQ-90 arrays, SS-3 subwoofers and SC-60SL slim columns combined, with beam presets per mode. Coverage is shaped to the audience for each configuration rather than to the room.
Outcome
- Speech transmission index above 0.85 measured after commissioning
- Even coverage in every mode
- "I would not have believed the STI performance if proved in advance" — client
- What sounded like a large reverberant hall now sounds like a lounge room
