Acoustics to Conference Rooms

Acoustics to Conference Rooms

Acoustics to Conference Rooms

May 10 2019

Goal: To provide a space where a variety of presentation styles can be effectively used without excessive

Tips and consideration

  • Recommended reverberation time is between 0.6 and 1 second.
  • Absorptive materials will most likely be necessary for the ceiling.
  • Often times, the perimeter of the ceiling is absorptive and the
    area above the conference room table is kept reflective.
  • Even if the reverberation time is optimally controlled, reflections
    from the walls can be problematic. Slap back from the back wall
    can create an issue for the presenter and parallel reflective
    surfaces can cause an annoying condition called flutter echo or
    standing wave. Ideally, at least the back wall and one side wall
    should be treated with acoustically absorptive material. It might
    not be necessary to completely treat the wall as long as the
    critical zone (normally from 3′-7′) is treated with a material that
    has an NRC of at least 0.50, ideally at least 0.80.
  • Draperies typically provide very little, if any, absorption.
  • Beware of potential noise impact to your space from exterior sources and/or excessive HVAC
    noise. To help protect your design, the NC level should not exceed 25 to 35. When specifying
    NC, specify an actual rating, such as NC 30, rather than a range, such as NC 25-30. Although
    specifying a lower number will ensure minimal background noise, it might be cost prohibitive
    to achieve. Be realistic about the amount of acceptable noise and the project’s budget when
    specifying an NC level.
  • If an electronic masking system is being used throughout the facility, it is best to avoid
    installing speakers in the conference room. If this cannot be avoided, consider at least turning
    down the speaker(s) in this space.
  • If confidentiality or privacy is an issue, you need to be concerned with the isolation quality of
    the wall. Even if you specify a high STC rating for the wall, it will not allow for privacy if the
    wall only extends to the ceiling, or just above the ceiling to help ensure confidentiality, the
    wall must extend to, and seal to, the deck. Remember, the STC rating of a wall only refers to
    how well a section of that wall performs in a laboratory and does not necessarily indicate how
    well the system will perform in the field. Specifying an NIC rating can help ensure the desired
    isolation level.
  • A sound system may be necessary to enhance the presentations



 DecorTrend – Slotted Timber Panels
 DecorPly – Perforated Timber Panels
 DecorBoard – Perforated Plasterboard
 DecorLini – Lineal Acoustic Planks
 BioPanel ZapX – Anti bacterial coating
 Vogl Plaster – Seamless Perforated Plaster
 DecorLux – Perforated Fibre Cement
 DecorSlot – Slotted Fibre Cement
 DecorSlat – Slatted Timber System
 DecorArti – Bespoke Acoustic Panels