How Do Wireless Headphones Work

The proliferation of standalone reproducing devices makes users wonder how wireless headphones work. Understanding the principles of the functioning of such devices’ models will help find a suitable model and not to lose.


What wireless headphones work through

All wireless headphones function similarly. The devices use wireless signal technology, which depends on the specific hardware requirements and the specifics of the sound source.

There are three methods of transmitting the signal wirelessly:

  • The radio signal. A highly stable method with a range of up to 2.4 GHz. Such devices can hardly be called portable in the full sense of the word because the work will require a large radio transmitter. Wearing a design with you is simply inconvenient.
  • Bluetooth. A universal wireless signal technology used by modern devices. The connection is implemented at a frequency of 2.5 GHz. The headset with a built-in Bluetooth interface easily connects to a computer, smartphone, or other device equipped with a corresponding wireless interface. The IEEE 802.11 standard (Bluetooth/ Wi-Fi) is characterized by signal stability and resistance to interference from the outside. The presence of a special encoding will not allow you to intercept the signal to other nearby devices. The headphones are compact and suitable for use on the go.
  • An infrared transmitter. It uses technology to transmit a signal with a high-frequency pulsation. The headphones provide a receiver that intercepts and amplifies the IR signal from the source. Models with this type of signal transmission are not suitable for use outside the home, as the connection only works if there is power from the 220 B network.

Any method of signal transmission involves the use of radio waves of the appropriate frequency. Common Bluetooth devices are performed as a standard design with a shared cable or TWS models. Each type deserves a separate careful consideration to help you choose a suitable option for specific purposes.


How far do wireless headphones work from your phone or PC

Depending on the signal technology used, the range of wireless headphones varies. More often, the manufacturers of the reproducing equipment do not seek to specify the exact indicator, assuming the use of the device close to the signal source. The technical documentation indicates a standardized figure of 10 meters (for Bluetooth headphones). But it is not specified that this indicator is fair for use in open space. Inside a room with many walls, the radius is reduced to 3-5 meters.

The specific distance of reception depends on the version of Bluetooth technology used and varies from 5 to 100 meters. The latest version of the interface is characterized by an extended range of action, improved stability, and signal speed.

When buying long-range Bluetooth headphones, it is important to consider that the signal source should support the aptX code. Without it, the signal in the transmission process will be compressed to improve the stability of transmission, which will negatively affect the quality of the sound.

Direct visibility between the source and the receiver (modeled on the TV remote) is important for infrared headphones to work. Obstacles negatively affect the sound quality and may not allow the beam to pass. For this reason, infrared wireless models are predominantly used for TVs and home players, while mobile devices prefer to choose other signal technologies. IR devices have a lot of drawbacks but have excellent sound and relatively low cost. But the limitations of the technology have left an imprint, and such models are gradually taking a back seat.

Radio eardies appear to be the most reliable and long-range. The signal used in this case can travel a distance of up to 100 meters, and obstacles in the type of furniture or walls do not delay the waves.


How wireless headphones work: instructions

wireless headphones

Wireless headphones function differently depending on the technology used. Understanding the mechanics of these devices will help you decide on the choice and get the best result while listening to music.

Bluetooth headphones

Bluetooth headphones are the most common because they seem to be convenient mobile devices with a pleasant sound.


How Bluetooth Headphone Works

Sound playback is guaranteed by standard mobile speakers that are not much different from similar components in wired models. The main difference is how the signal from the source gets into the speaker and turns into a full-fledged sound.

The transmitter is a special Bluetooth interface present in the headphones themselves and the source of the signal. The source is a computer, laptop, mobile phone, tablet, or special player. The receiver inside the headphones captures the signal coming from the source, decipher it, and turns it into sound waves. the transmitter in Bluetooth headphones

These models will require the energy the battery provides. The power source is built directly into the headphone case or integrated into the neck strap.

The Blouse interface starts automatically as soon as it is turned on. Moreover, the device can be on standby for a long time, consuming less energy than playing.

The described connection works at shorter distances than the eardies but is characterized by the better sound quality and increased resistance to interference. In addition, the model with the traditional radio transmitter Bluetooth device distinguishes mobility favorably. Headphones don’t take up much space and are easy to sync with your smartphone.

The signal is transmitted via an encrypted channel in which each of the devices has its own identification numbers. This approach improves the stability and security of the connection but requires a pre-pairing between the machines.

Modern Bluetooth headphones are so small that they can easily fit in their pockets. But if desired, users are also available and large full-size models.

For the reproducing device to function, the battery must be recharged regularly. Manufacturers can now create highly optimized and energy-efficient models that can function without recharging for a long time.


Radio Module

Another type of wireless headphones is models with a radio module. It is the example of standard radio headphones that usually explains the principle of wireless reproducing gadgets.


How the ear parties are arranged inside

The earthlings consist of the most reproducing equipment and a special transmission base. This base connects to a power source and a broadcasting device used by a computer, audio player, or mobile device.

Inside the devices, there is a receiver that receives a signal coming from the transmitter. For this technique to be possible, the device needs a constant power source similar to the battery or network BD. The eardies are characterized by large size and poor protection from interference. The physics of the frequencies used allows the signal to be transmitted through walls within a radius of tens or even hundreds of meters.

The signal is transmitted in analog form at FM 863-865 MHz frequencies. The sound quality is good, but the presence of interference from other devices brings many inconveniences.

The distinctive features of the devices described include the presence of a built-in radio. And headphones can independently memorize the necessary stations, which saves time on setting up. More often than not, devices are well-tuned according to the specific preferences of the listener. And the presence of high-quality protection against the negative impact of the external environment will allow the use of the device even in the most difficult conditions.

But when choosing radio headphones, it is worth considering that weather conditions influence the reception of the radio signal, and a tangible weight more often characterizes the design itself. Wearing too long often causes discomfort.



TWS devices are considered to be a type of Bluetooth headphones. They also transmit the signal via Bluetooth technology, but unlike standard models, the headphones are not connected and are autonomous devices for each ear. The TWS abbreviation stands for true wireless stereo, which means a truly wireless stereo.

Famous examples of TWS headphones are AirPods for iPhones, Xiaomi Mi Airdots, JBL Tune 120 TWS, Honor Choice, and True Wireless Samsung Galaxy Buds for Android devices.


What True Wireless Stereo headphones are made of

Inside, TWS headphones have a design similar to other reproducing devices. The case is home to a motherboard, a battery, and the speaker itself.

More often, the halves of the case are connected with the help of a bracket without glue. This approach ensures that the inside is accessed for repair. The originals of TWS are not cheap, so repairability seems to be the most important condition.

The control of headphones is implemented with a mechanical button or a special touch sensor. The number and duration of the touches affect what function will be involved in the device. Touch control is convenient, but there is a risk of false positives. For this reason, some users prefer to select devices with mechanical control.

The AirPods also have a set of sensors to help you automatically pause playback when you pull the earpiece out of your ear. At first, using such headphones is unusual, but clear instructions and guides on the Russian will help quickly understand the settings.


There is also a built-in microphone in the headset to help you talk comfortably.

TWS devices come together with a case that also acts as a charging station. As long as the headphones are not used, they are stored in the case and at the same time recharged from the built-in turn-bank. This ensures the comfortable use of headphones without worrying about the sudden discharge of batteries.

TWS headphones appear to be the most advanced wireless play-out devices. The devices are reliable and functional. On the Internet platforms like AliExpress, many inexpensive Chinese models, so the user will choose the product following their own wishes.



Wireless headphones are extremely convenient devices, which are an important milestone in the development of technology. For domestic use, the best option is models with a Bluetooth interface. It will not be difficult to choose a device on characteristics, sound quality and constructive performance.

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I am tech writer who is passionate about technology and spearheads the core writing team on tech news

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