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| Acoustical performance embraces two important areas: |
 Sound Absorption (Alphaw): a measure of a material’s ability not to reflect sound,
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| and Sound Reduction (R or Rw) which describes how much sound is reduced when it transmits through a material.
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| For suspended ceilings Sound Reduction also includes Sound Attenuation (Dnc or Dncw), which is the process when sound transmits through the ceiling twice via the common ceiling void.
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| Therefore, ceilings should be chosen depending on the actual acoustic requirements of a room or space. Armstrong offers an
extensive choice of acoustical ceiling solutions that will meet your project needs.
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| Sound Absorption |
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| Sound Attenuation |
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| Sound Reduction |
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Selected Solutions:
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| High Sound Reflection (Alpha w < 0,15) |
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| High Sound Absorption (Alpha w > 0,90) |
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| High Sound Attenuation (Dncw > 37) |
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| Good Sound Absorption and Sound Attenuation |
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| Types of applications where the following attributes may be considered to be more important: |
| Sound Reflection: larger meeting rooms, lecture theatres, music rooms
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| Sound Absorption: open plan offices, dealing rooms, call centres
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| Sound Attenuation: executive offices, meeting rooms, consulting rooms
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