The reflection problem
Modern conference rooms tend toward glass walls, hardwood floors, and hard ceilings. All reflective. The result: the video-call microphone picks up your voice plus 10 reflections of your voice, and the remote listener hears a muddy mix.
Speech intelligibility drops sharply after RT60 exceeds 0.5 s. Most untreated glass conference rooms measure 0.8-1.2 s.
The treatment recipe
Ceiling treatment: PET clouds or baffles directly above the meeting table. Biggest single win — the ceiling reflection is the closest and strongest.
Rear wall treatment: absorber panels behind the display or opposite the table. Kills the far-wall reflection.
Side wall treatment: absorber panels at seated head height along both side walls.
Floor: carpet or acoustic carpet. Reduces chair-drag noise and floor reflections.
Panel coverage — 25-35% of hard surfaces
For a typical 4×6 m boardroom, plan on 30-40 sq ft of panels. That's about 4-6 large PET panels or a wall of gripper-fabric treatment.
Standard PET colours match most office palettes; custom colours available on project-scale orders. Gripper-fabric walls can be printed with brand imagery for premium boardrooms.
Microphone and camera positioning
Even with perfect acoustics, ceiling-mounted microphones work better than table-mic solutions. They pick up all speakers evenly and are less affected by chair placement.
Camera at the display end of the room: guests see each other; remote participants see the whole room. Reduces the acoustic performance's dependence on where people sit.