Calculate Reverberation

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What is reverberation?
Reverberation is the overall effect of reflected sound and the time required for reflected sound to become inaudible. Short reverberation times are good for speech intelligibility, leading to better understanding and comprehension.

Why is it important?
Noise control issues – in offices, education facilities and hospitality venues, for example – can make the modern workplace less effective, leave students unable to hear what’s being taught, and cause dissatisfaction among restaurant clientele.

Custom Reverberation Report

Armstrong can provide you with reverberation (RT) and speech privacy (PI) calculations through our TechLine resources or contact your local rep for some quick recommendations.

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LEED Compliance

Acoustics play an important role in a building occupant experience.  Our Reverberation Time Calculator  supports the development of acoustical criteria and helps identify effective strategies and solutions tailored to each space. The summary of results can serve as supporting documentation for both LEED v4 EQc9: Acoustic Performance and LEED v5 EQc2: Occupant Experience, Option 4 – Sound Environment.


Classroom Acoustics

ANSI Standard S12.60 for Classroom Acoustics addresses the issues of both reverberation time and background noise and their effect on speech intelligibility by placing maximum permissible levels on each.

Under the new standard, the maximum reverberation time in an unoccupied, furnished classroom with a volume under 10,000 cubic feet is 0.6 seconds, and 0.7 seconds for a classroom between 10,000 and 20,000 cubic feet. The maximum level of background noise allowed in the same classroom is 35 decibels (dBA).


Resources