Encyclopedia
Reverberation
Reverberation: the process of gradual decay of sound (decline in levels of sound pressure) in enclosed spaces after the cessation of operation of sound sources
Source: "GOST 23499-2009. Inter-state standard. Building sound insulation and sound absorbing materials and products. General technical conditions"
(introduced into effect by Order of Rosstandart dated 10.11.2010 No. 362-st)