Even the smallest space will create some kind of reverberation that will be perceived by the listener. This reverb is produced by any sound in a space being reflected from available surfaces back to the listener. Even the interior of a car will produce internal reflections. Of course, larger spaces and more reflective materials will result in much larger reverbs.
There are only subtle differences between the aural phenomena known in music production terms as reverb and delay, which can lead to confusion. Delay essentially mimics an echo, the effect caused when a sound bounces back off the listener’s physical surroundings, giving the impression of a repetition of the original sound. When multiple echoes arrive at the listener in such close succession that they become indistinguishable from each other, we call this a reverberation.
