Remove ads

喊话器(英语:megaphone, loudhailer, bullhorn, blowhorn),又称声音喇叭(英语:voice trumpet, speaking trumpet, hailing trumpet),粤语闽南语俗称大声公,是一种手持的号筒扬声器英语horn loudspeaker,用于扩大使用者的讲话声音,以使讲话内容被更远或更多的人听见。

喊话器可分为原声喊话器(英语:acoustic megaphone)和电力喊话器(英语:electric megaphone)。前者主体部分仅包含一个喇叭,完全依靠声学效应扩大声音。后者除了喇叭还包含收声的麦克风和扩音的电子设备。

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.

Remove ads