Megaphones are widely used in public gatherings, protests and outdoor events. These are acoustic devices that amplify sound and make it audible to a large audience. There are various synonyms for the word megaphones including bullhorns, loudspeakers, amplified speakers, cones, horns, and voice projectors. Bullhorns are commonly used by law enforcement officials to communicate with large crowds. Loudspeakers and amplified speakers are widely used in music concerts, public speeches, and announcements. Cones and horns are vintage style megaphones commonly used in cheerleading events to increase the volume of the performer's voice. Voice projectors are electronic devices that enhance the speaker's voice and project it to a large audience.