Qatar Yellow Pages Online
Home » Products »  MEGAPHONE

MEGAPHONE

Add Review
Price : On Request



ALL TYPE OF MEGAPHONE A megaphone, speaking-trumpet, bullhorn, 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. It somewhat distorts the sound of the voice because the frequency response of the megaphone is greater at higher sound frequencies.
  • Product Details
  • Brand :
  • Place of Origin : Not Given
  • FOB Price : On Request
  • Minimum Order Quantity : Not Given
  • Supply Ability :
  • Packaging & Delivery
  • Packaging Detail : Not Given
  • Delivery Detail : Not Given
Not Given