acoustic doors Acoustic Doors for Professionals

As a professional, you know that there are several situations in which buildings must offer absolutely soundproof spaces- areas which will include acoustic doors in addition to highly insulated wall systems and tightly sealed windows.

  • Medical facilities are required by HIPAA law and regulation to preserve patients’ privacy rights. This means specifying acoustic doors in:
    • Exam and diagnostic rooms
    • Treatment and counseling rooms
    • Special procedure rooms
  • Office buildings contain specific areas in which highly confidential information is communicated and, therefore, require acoustic doors:
    • Financial institutions
    • Human Resources offices
    • Negotiation conference rooms

AD Systems offers designers and interior planners the best in sound isolation engineering coupled with the utmost in aesthetic appeal. Your clients can trust that you are recommending acoustic doors built to the most rigorous standards.

Sound Transmission through Acoustic Doors

What is STC?

STC stands for “Sound Transmission Class”. This measures the extent to which sound is prevented from being transferred from one area to another. The higher the STC value of acoustic doors, the less sound is transferred from one area to another.

A 3-point jump in an STC rating equals a doubling in a door’s ability to prevent sound transmission. Acoustic doors are tested as an assembly comprised of the door, frame, hinges, and sound sealing system.

I have a specification that references an OITC value. Is this the same as STC?

OITC stands for “Outdoor-Indoor Transmission Class”. This measures the ability of a building material or product’s ability to retard sound transmission. OITC is a measure of sound transmission from the external environment into the building. Testing to establish an OITC value utilizes ASTM E-1332 Standard Classification for the Determination of Outdoor–Indoor Transmission Class. This standard more closely replicates the sounds of external rail and vehicular traffic.

What is NRC?

NRC stands for “Noise Reduction Coefficient”. This number measures the effectiveness of a sound absorber. Sound absorbers deaden sound within a room, eliminating the reverberation of sound. When dealing with the effect of sound at its origin, NRC should be used as a measurement. It has little to do with the transmission of sound into adjoining areas.

How Else Does AD Systems Measure Acoustic Doors?

NIC stands for “Noise Isolation Class”. It expresses the actual degree of sound control between two adjourning areas. These areas are measured at various frequency levels inside a building, which is commonly referred to as a “field test”. Field tests try to take the entire environment into consideration and not just the primary wall or barrier.

The results of a field test (NIC) will always be lower than that of a laboratory test (STC). NIC results from a controlled laboratory setting whereas STC takes natural sound paths into account.

AD Acoustic Doors

AD Systems acoustic doors were specifically developed as sound-transmission solutions for medical clinics and hospital facilities as well as corporate office settings. They have solved the problem of perimeter gaps that can be a challenge to sound containment, allowing architects and space designers to offer their clients a pleasing design without sacrificing privacy.

Our acoustic doors have a seal on all sides of the door frame, isolating sounds within a room substantially better than a typical office door. The sliding design conserves valuable work space, which is ideal for private offices along the perimeter of a central work area. Each room or work area is private, increasing productivity and ensuring privacy.

If you are a professional space planner or an architect designing a health care or an office renovation or construction project, contact AD Systems for more information about how acoustic doors can lead to better work environments.