3d megaphone speaker set of multicolored icon . loudspeaker bullhorn for announce discount promotion, sell reduced prices

emergency siren horn substance hand speaker megaphone icon conversation cartoon speakers advertising audience icons loudspeaker amplifier shouting warning notification microphone copy space isolated rendering broadcast public communication message announcement attention loud sound announce advertisement speech marketing speak bullhorn background render broadcasting news equipment symbol shout voice promotion set multicolored symbol discount sell reduced prices concept vector pastel minimal style