Reverberation Time Measurement

Reverberation time is the time taken for sound to decay or fade away to 60dB in an enclosed area (calculated from T20 and T30), even after the original source of that sound has stopped.

Using equipment such as omnidirectional loudspeakers and power amplifiers, Sound Advice Acoustics are able to provide precise reverberation time measurements with instant results.

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Acoustic considerations

Reverberation is a key consideration when indicating the acoustic quality of a room. Long reverberation will make speech unintelligible, where as short reverberation can make music sound lifeless.

For example, a school classroom should have reverberation times between 0.4-0.6 seconds, higher than that and the teacher is battling against the continuing reverberation of his or her own voice for the pupil’s attention.

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How we measure

To get a measurement, noise is introduced to the room, then abruptly taken away. Reverberation times will be different in various places within the room, so we will always measure in several locations.

The average for all these positions gives an overall reading. The shape of the room, building materials used and all the objects within the room (even people) all contribute to the reverb time.

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The complete solution

We provide a quick and reliable service, and our expert qualified sound engineers have helped reduce reverberation greatly in echo prone environments in the past such as school classrooms and libraries with our noise insulation solutions.