Earpieces for Bluetooth Explained

In the past few years, earpieces for Bluetooth have become more popular because they are easy to use. Even though many people still use wired headphones, more and more people are switching to Bluetooth-enabled wireless headphones. Some wireless headphones don’t use Bluetooth technology to make them work. To work, some wireless headsets use radio technologies, like Wifi, infrared, and others.

To understand Bluetooth headphones, you need to know how wired, and wireless speakers and headphones work together. After learning how these devices work, you’ll be able to use Bluetooth headphones, headsets, or earbuds.

What is the system that makes headphones work?

In a way, both earphones and speakers can be considered electroacoustic transducers. So, these devices have parts that can turn the electrical energy from the sound source (sound waves) into sound energy (music). Bluetooth headphones are very similar to wired headphones in terms of how they work. Impulses of electricity can also be turned into sound waves.

Instead of being physically connected to the sound source (MP3 player, smartphone) through the headphone jack, Bluetooth headphones connect wirelessly to the sound source using Bluetooth technology and receive the electrical signal through the wireless connection between Bluetooth headphones and the sound source. Thanks to Bluetooth, an invisible cable, you can now listen to music without a wire.

The main difference between a Bluetooth headset and one that is wired is that a Bluetooth headset is wireless. When Bluetooth headphones pick up a wireless signal, the tiny speakers or “driver units” inside the headphones turn it back into sound energy.

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How a Bluetooth headphone is put together

To understand how Bluetooth headphones work, you should know what they are made of. Bluetooth headphones make sound with the same parts as wired headphones. This group is made up of magnets, voice coils, and diaphragms. All of these parts make up the unit that moves the car.

You can use Bluetooth and wired headphones to listen to music, record your voice, and talk to other people. In addition, Bluetooth headphones have parts that help the device work better. For example, a rechargeable battery and a Bluetooth system on a chip (SoC) are both built-in (DAC).

Following is a breakdown of the key parts and functionality of Bluetooth headphones.

Driver unit: The driver unit creates sound in headphones. Since the transducer generates sound from electrical impulses, it is accountable for this process. Depending on the transducer technology, the driving unit might have various forms.

The most common type of driver unit is one with a dynamic or moving coil driver. This speaker comprises a ferrite or neodymium magnet, a voice coil, and a cone (diaphragm).

Rechargeable battery: Unlike wired headphones, Bluetooth headphones need batteries to work. As long as it has power, the SoC inside can, among other things, talk to other Bluetooth-enabled devices, process and convert signals, and cancel out noise. The gadget has a charging port for when you need to charge the battery.

System on a chip: An integrated circuit, a system on a chip (SOC) is a part of Bluetooth headphones. It also has a DSP, DAC, memory, ports for connecting, microcontrollers, and other parts.

Since the audio source already has a DAC and amp built-in, wired headphones don’t need a separate one. The only exceptions are headphones that connect with a USB type-c or lightning port. Bluetooth headphones have DACs and amplifiers because the Bluetooth signal from the sound source is digital and needs to be changed into an analog signal before it can be used to make music.

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