pink megaphone on white background closeup, hand loudspeaker , purple loudhailer or speaking trumpet

acoustic advertise agitation alarm alert amplifier announce announcement appliance attention audio background black blower broadcast bullhorn call close communicate communication concept declaration design device emergency equipment event hailer hand handheld horn icon illustration increase information isolated loud loudhailer loudspeaker media megaphone message mouth mouthpiece news notice object plastic portable propaganda public red report reproducer scream shout shouting sign sound speak speaker speaking speech symbol talk talking technology tool trumpet tube voice volume warning white