Speakers are almost everywhere in our lives. They are in our computers, cars, TVs, alarm clocks; we can almost not avoid them. They're a crucial part of any sound system, even if you have the best computer and the highest quality sound file. Without good speakers, you won't get a very high quality sound. Although they are this common in our everyday lives, I would guarantee you that most people don't know how they work. Well this is how.
Speakers use very basic tools to create a sound out of an electric signal. The basic tools needed to create a speaker can be as basic as a can, magnet, wire coil, and a battery. Speakers made and sold for profit aren't as basic as that, but are made out of an electromagnet and a permanent magnet to heighten sound quality. The electromagnet gets pulses of electricity shot through it which causes the magnetic field to rapidly change. This rapid change helps transform and electrical signals into audio which we can hear.
Because the diaphragm or membrane of a speaker is vibrating so quickly, it projects the audio to a volume we can hear. This audio can be made softer or louder depending on the frequency of vibrations. The higher frequency, the louder the volume. Most speakers have different sized electromagnets and casings to project different kinds of sounds. A smaller, higher frequency speaker produces higher sounds while a bigger and lower frequency speaker creates lower sounds. This is all directed by a single electric circuit.
There you have it! How speakers work. In conclusion, speakers use electromagnets and magnets to create frequencies that create and project sound waves from simple electric pulses. Its the simplicity of speakers that makes them so great and easy to understand, yet so high tech at the same time.
How Do Speakers Work?
Nick and George
Speakers are almost everywhere in our lives. They are in our computers, cars, TVs, alarm clocks; we can almost not avoid them. They're a crucial part of any sound system, even if you have the best computer and the highest quality sound file. Without good speakers, you won't get a very high quality sound. Although they are this common in our everyday lives, I would guarantee you that most people don't know how they work. Well this is how.
Speakers use very basic tools to create a sound out of an electric signal. The basic tools needed to create a speaker can be as basic as a can, magnet, wire coil, and a battery. Speakers made and sold for profit aren't as basic as that, but are made out of an electromagnet and a permanent magnet to heighten sound quality. The electromagnet gets pulses of electricity shot through it which causes the magnetic field to rapidly change. This rapid change helps transform and electrical signals into audio which we can hear.
Because the diaphragm or membrane of a speaker is vibrating so quickly, it projects the audio to a volume we can hear. This audio can be made softer or louder depending on the frequency of vibrations. The higher frequency, the louder the volume. Most speakers have different sized electromagnets and casings to project different kinds of sounds. A smaller, higher frequency speaker produces higher sounds while a bigger and lower frequency speaker creates lower sounds. This is all directed by a single electric circuit.
There you have it! How speakers work. In conclusion, speakers use electromagnets and magnets to create frequencies that create and project sound waves from simple electric pulses. Its the simplicity of speakers that makes them so great and easy to understand, yet so high tech at the same time.
Sources:
http://www.physics.org/article-questions.asp?id=54
http://www.youtube.com/user/only126db