Speakers are the most important part of our daily life which enables you to listen to music on your phones/laptops, Call a person on your phone, enjoy a movie at cinema, Dancing in DJ and much more. All just because of the speakers. Lets see how speakers work.
All Speakers converts an electrical signal to an audible sound signals, what actually happens it that speakers has an electromagnet that means a magnet or a metal coil which forms a magnetic field when electric current are passed through it. This electromagnet is similar to the normal magnets when active. It also have a permanent magnet.
All speaker has following main parts.a) Permanent magnet
b) A Cone structure
c) Electromagnetic coil
OK, lets talk about the inner arrangements. A speaker is fitted with an electromagnet which is placed in front of a permanent magnet. The permanent magnet is fixed into a single position whereas the electromagnet is movable.
As soon as electricity is passed through the coil of the electromagnet, the direction of its magnetic field is changed very rapidly. Which means the the electromagnet is attracting to the magnet and repelling it very rapidly.
Now the electromagnet is attached to a cone shaped material made of a flexible material such as paper or plastic which amplifies or transfers these vibrations and pumping sound waves into the surrounding air and towards your ears. Here the frequency of the vibrations controls the pitch of the sound produced, and their amplitude controls the volume.
In order to produce all different types of frequencies of sound the high quality speakers uses different sized cones which are dedicated to high, medium and low frequencies to produce different sounds. The microphone in phone and receiver uses the reverse mechanism which convert sound into an electrical signal.
When I see a speaker, I thought of a person who discovered it. He was a genius he is a true master who changed the way we hear the sounds.
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