Reverberation time is the time taken for a sound to decay or ‘die out’. This applies to many situations within buildings.
Reverberations can cause echoey sounds travelling back and forth in a room. Technically ‘reverberation time’ is the time taken for a sound to decay by 60dB after the sound source has stopped.
Room reverberation directly affects speech intelligibility – or the clarity of sound. The longer the reverberation time the less likely speech will be heard clearly and crisply.
Below are some examples of the effect of varying room reverberation times on speech…
Achieving the correct level of reverberation time in a room is very important – particularly where speech intelligibility is critical – for example school classrooms and conference rooms.
Porous types of sound absorbing materials are very effective in the high end of the frequency range. This is why it is important to have lots of low frequency absorption in order to achieve a neutral reverberation throughout the complete frequency range.
ReSpace Acoustics specialise in the acoustic treating rooms, providing the correct reverberation time for the use of the room.