A Short Guide On How Speakers Work: It’s All About That Bass!
A song that every bass lover will definitely play on the speakers?
‘Yo, I got that hit that beat the block,
You can get that bass on below.
I got that rock and roll,
That future flows.’
The iconic Black-Eyed Peas song, “Boom Boom Pow”.
Today, all songs of the genre talk about heavy bass. The continuous “boom” is transcendental, and you can slowly feel yourself being transported into another realm. But where did this “Bass” come from? And from what led to the development of speakers, things that we see almost everywhere? If you’re someone who wonders about that, read on below:
1. Technically, a loudspeaker is an electroacoustic transducer. It’s a fancy name that tells us what it does. It converts the electric audio signal into a corresponding sound.
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2. The most widely used is the dynamic type. The loudspeaker was invented in 1925 by Edward W. Kellogg and Chester W. Rice at General Electric, United States.
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3. The working principle behind the speakers is the same as a dynamic microphone, albeit in reverse. A dynamic loudspeaker produces sound from a corresponding electric signal.
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4. However, not every sound source can be fed into the loudspeaker. It must first be amplified via an amplifier. After that, it is converted into an electric signal by a microphone and sent to the loudspeaker.
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5. Earlier designs consisted of a moving coil inside the main speaker. When an AC current signal is passed through the Coil that suspends between the poles of a permanent magnet, forcing the Coil to move back and forth.
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6. This follows Faraday’s Law of Induction, which is also the operating principle behind transformers and many other types of electric motors.
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7. The rapid Coil movement causes a diaphragm (attached to the Coil) to move back and forth as well, pushing the air to create sound waves.
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8. This is the most basic MO to create sound from electric signals. With the advancement of technology, many alternate methods now exist to produce sound from electric signals.
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9. This whole mechanism is enclosed in a cabinet. It was earlier sourced from wood but is now more commonly made of plastic. The material and design play a vital role. It must be stiff and highly non-resonant.
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Armed with the knowledge of how loudspeakers work, it has now become possible to appreciate a speaker’s design along with the music it plays, enhancing the overall quality of listening to music.
Blog Edited By Ritika Gupta
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