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Reverberation
(redirected from Reverberation time)

   Also found in: Medical, Wikipedia, Hutchinson 0.06 sec.
Reverberation

After sound has been produced in, or enters, an enclosed space, it is reflected repeatedly by the boundaries of the enclosure, even after the source ceases to emit sound. This prolongation of sound after the original source has stopped is called reverberation. A certain amount of reverberation adds a pleasing characteristic to the acoustical qualities of a room. However, excessive reverberation can ruin the acoustical properties of an otherwise well-designed room. A typical record representing the sound-pressure level at a given point in a room plotted against time, after a sound source has been turned off, is given in the decay curve shown in the illustration. The rate of sound decay is not uniform but fluctuates about an average slope. See Sound

Typical decay curve illustrating reverberationenlarge picture
Typical decay curve illustrating reverberation


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Used on the floor it reduces reverberation time and creates a softness so the floor can be inhabited.
The sound of chairs scraping across a hard surface irritates and distracts a preschooler more than ah elementary student, so controlled reverberation time is needed within these classrooms.
The reverberation time in the classroom should be about 0.
 
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