dispersion, scattering -- (spreading widely or driving off)
distribution, dispersion -- (the spatial or geographic property of being scattered about over a range, area, or volume; "worldwide in distribution"; "the distribution of nerve fibers"; "in complementary distribution")
dispersion, dispersal, dissemination, diffusion -- (the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge")
(Sound)
