- Posted by: Ittiana_Xtriali
- Category: Loudspeaker Work
In the sound system, the quality depends on the speaker. CDs, tapes and DVDs are the component of system speakers that stores the electronic signals and turn it back into actual sound that we can hear.
Basics of sound:
Before knowing how a speaker works, first you have to understand how sound works. The eardrum is the thin piece of skin inside your ear. Whenever your eardrum vibrates and then your brain interprets the vibration as the sound that’s how you hear a sound. Any rapid changes in air pressure are a common thing to vibrate your eardrum.
Sound can travel through solids and liquid, but when we listen to speaker the air is worked as the transmission medium. When vibration occurs it moves the air particles around it and those air particles carrying the pulse of the vibration through the air as a traveling disturbance.
Vibrating object sends a wave of pressure fluctuation through the atmosphere and then it reaches your ear it vibrates the eardrum back and forth. Then your brain interprets this motion as sound.
How speaker workers?
A speaker is a work when the electrical energy into mechanical energy and it compressed air and convert the motion into sound energy. The diaphragm, voice coil, magnet are the main anatomy of a speaker.
The overall concept of the speaker:
The speakers contain an electromagnet, when an electric current is passed through a metal coil creates a magnetic field. The coil behaves like a permanent magnet with one, particularly handy property. When reversing in the direction of the current in the coil flips the poles of the magnet.
In front of a permanent magnet, an electromagnet is placed and it is fixed firmly into position whereas the electromagnet is mobile. The direction of the magnetic field is changed when a pulse of the electricity passes through the coil of the electromagnet. Then it means, in turn, attracted to and repelled from the permanent magnet, vibration back and forth.
The electromagnet attached to the cone that made materials like paper or plastic which amplifies this vibration, then pumping sound waves into the air and also towards your ear.
Making Sound: Diaphragm, voice coil, magnet
Drivers produce sound waves by vibrating diaphragm in the speaker anatomy. Drivers have dome instead of a cone, is just a diaphragm that extends out instead of tapering in. Cone made of paper, plastic is attached to the suspension, it allows to move cone and is attached to drivers’ metal frame that is a basket. The coil is attached to basket by a spider and it holds the coil in position but allows moving freely back and forth.
Voice coil is a basis of an electromagnet and when an electric current passes through it changes direction, the coil polar orientation reverses. These changes the magnetic force between the magnet and the voice coil, that moving coil and attached diaphragm back and forth. These three parts of a speaker are the main reason for sound-producing in speaker.
Speakers are the most outstanding piece of technology that profound impact on our culture. From these details, we find out how the speaker works and how the speaker design differs and how this difference affects the sound quality of the speaker.