Conference Rooms are rooms where speech intelligibility is critical. Concerence rooms should have reduced noise from air conditioning, mechanical systems and outside noise sources for privacy. The room should have a reverberation time from .5 to .75 seconds. The lower the reverberation time in the room, the better the speech intelligibility.
It is usually the responsibility of the architect or design engineer to predesign the mechanical systems using Noise Criteria Curves (ambient room noise level graphs) based on the intended room usage.
We typically treat conference rooms with acoustical absorbing materials on walls (above chair rail height), and treatment on the ceiling above the conference room table. If there is a drop tile ceiling with an open plenum cavity above where noise is getting into the room, we have plenum rated ceiling barrier and plenum return silencers to reduce noise from other rooms and mechanical equipment above.
We have a variety acoustical door seal kits (ADA approved) to use around your doors to seal out leakage, around the door.
Note: A 1% leakage of sound in a wall will lose 50% of the effectiveness of the sound blocking ability of the wall. This is why door seals and acoustical caulk around the perimeter of the wall and around outlets and penetrations is so important.