Clarity is a measure of the degree to which individual sounds stand apart from one another. This measure is based on the amount of reverberation and echo present. If there is no reverberation and echo present the individual sounds will be mutually exclusive and clear however if there is reverberation and echo present, the reverberant echo from preceding sound will affect the following sound clarity.

Clarity is defined as the ratio in dB of the energy of the early arriving sound (including the direct sound) to the late arriving sound (mainly reverberation). The larger this level turns out, the clearer is the sound impression, because it is hardly disturbed by later arriving diffused sound.