A megaphone, speaking-trumpet, bullhorn, blowhorn, or loud hailer is a portable, usually hand-held, cone-shaped acoustic horn used to amplify a person’s voice or other sounds and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves radiate out the wide end. The megaphone increases the volume of sound by increasing the acoustic impedance seen by the vocal cords, matching the impedance of the vocal cords to the air, so that more sound power is radiated. It also serves to direct the sound waves in the direction the horn is pointing.
Posts about Bullhorn
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    … what you do. But do they know who you are? We typically size someone up in the first 30 seconds. We ask ourselves, “Can I trust this person?” “Do I relate?” We look for visual and audio cues – clothes, body language, manner of speaking, and more – with the goal of connecting. The same goes for your content marketing goals. What impression do you…

    Content Marketing Institutein Social YouTube- 18 readers -
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