It can make the best guitar player sound better, but it can also destroy speech intelligibility to the point of ruining any type of live performance. Certain spaces, namely orchestra and symphony halls, need the right amount of it … but not too much, and not too little. “It” is reverberation.

Reverberation – After a sound’s source has become silent, the sound will continue to bounce off of surfaces until the sound wave loses energy through absorption or eventually dies out.

Reverberation Time – The reverb time of a room is the time it takes for sound to decay by 60 dB once the source of sound has stopped. Reverb time is the basic acoustical property of a room which depends only on its dimensions and the absorptive properties of its surfaces and contents. Reverberation has an important impact on speech intelligibility.

Read on to find recordings of various reverb times and a chart showing optimal reverberation times in certain types of spaces…


One-second reverb time

Two-second reverb time

Three-second reverb time

Six -second reverb time

Now … what should we be aiming for?  What spaces need to be at what reverberation times?

The way to treat reverberation is with absorption.  Below, we’ve listed some of our more popular absorptive products.

Sonex® Acoustical Foam  – the industry standard for noise reducing foam, and the first to provide foam to the recording and broadcast industries 40 years ago.

Fabric Wrapped Acoustical Wall Panels – used to reduce noise and control sound in many different spaces. These sound absorbing panels come in a large variety of sizes, types and colors. This variety can your design, budgetary, and durability requirements. 

Fabric Wrapped Baffles and Banners –  high efficiency flexible banners that provide exceptional sound absorption in comparison to their cost.  Sound Baffles are an effective, economical acoustic treatment. It is suspended from the ceiling to increase speech intelligibility and music clarity. Baffles are an excellent choice for use in spaces that are large or have limited wall space.