Working of Headphones
Lets try to understand the science behind the working of headphones in some simple points
- As we know headphone contains speaker connected with wires and plug connected with the sound source, so at first the sound source send the sound in form of an electric signal basically the signals have all the data about waveform’s amplitude, pitch voice, pitch speech or music then this electric signal will travel through wires.
- Then these signals splits into parts usually two, we know we have two speakers in headphones and we need sound in both so we made it the way that it equally divides electric signals.
- Finally these signal reaches headphone cups, they contain speaker drivers which will be used to convert over electric signals in sound form. So how does it convert? Speaker drivers mainly have three parts which are diaphragm, voice coil, and magnet.
- Diaphragm: Its a thin flexible membrane, its main task is to vibrate when any electric signal passes through voice coil and these vibrations will cause change in air pressure which will create sound waves.
- Voice Coil: The voice coil is a wire coil attached to the back of the diaphragm. It is positioned within the magnetic field of a permanent magnet. When the electrical signal passes through the voice coil, it generates a magnetic field that interacts with the permanent magnet, causing the voice coil and diaphragm to move back and forth.
- So due to this movement, the air gets pushed and pulled the air pressure changes due to this movement sound is produced which enters our ear and we hear sound.
What are Headphones?
Headphones are a type of hardware output device that can be connected to a computer’s line-out or speakers port, as well as wirelessly using Bluetooth. They are also referred to as earbuds. You can watch a movie or listen to audio without bothering anyone nearby by using headphones.
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