Sound+-+Electromagnetic+wave

Speaker works by the electromagnet. Which is positioned in a constant magnetic field. The magnetic field is created by a permanent magnet. When those two interact with each other, the same thing as magnet will happen. The negative pole will attach to the positive. The alternating current will constantly reverse the force between voice coil and the permanent magnet. In this way it pushes the coil back and forth.
 * How does Speaker work?**

While the coil moves it will push and pull the speaker cone. This will make it vibrates the air which will create sound wave. Just like some other waves, the frequency and amplitude will affect the rate and distance coil moves. This is how traditional speakers produce wave.

The wave frequency is depended on the driver in the speaker. The three basic types of drivers are Woofers, Tweeters, Midrange. Woofers in the biggest driver along those three and it produce low frequency sound. Tweeters is much smaller in size, it produce much higher frequency sound. Lastly Midrange, produce the frequency that is in the middle of the sound spectrum.

<--- **Download my insane applet and it tells you how sound waves are send out.** - First you need to click the button that says sound. -You can choose the frequency and amplitude for the way, it also can be showed from the graph. -You can either choose particle or grayscale. - If you choose particle, you can change the speed it's moving/velocity. Particle acceleration and friction.

Have fun playing with it :)

The people who made this applet are the people in University of Colorado. It's for educational purpose. Here is the site where i got my applet [] [[http://electronics.howstuffworks.com/speaker6.htm|

http://electronics.howstuffworks.com/speaker6.htm]] This site shows you what will happen when magnetic field is created. Also pictures of drivers.