What is Bluetooth Speaker & How it Works

What is Bluetooth Speaker & How it Works

Bluetooth speakers are becoming increasingly popular and used more frequently, making them a great choice for many people who enjoy parties or outdoor activities, or if you want to add speakers to your dorm room, new home, or in an old car with a broken sound system.

Before we can understand how a wireless Bluetooth speaker works and how a Bluetooth speaker can be paired with various devices, it may be helpful to understand what Bluetooth is.

What is Bluetooth?

Bluetooth is a radio technology that supports communication between devices over short distances (generally within 10m) and enables wireless information exchange between many devices including cell phones, PDAs, wireless headsets, laptops, related peripherals, etc. Using Bluetooth technology, it can effectively simplify the communication between mobile communication terminal devices, and also successfully simplify the communication between devices and the Internet Internet, so that data transmission becomes more rapid and efficient, and broaden the road for wireless communication.

As a small-range wireless connection technology, Bluetooth can realize convenient, flexible, secure, low-cost and low-power data communication and voice communication between devices, so it is one of the mainstream technologies to realize wireless personal area network communication. Connecting with other networks can bring a wider range of applications. It is a cutting-edge open wireless communication that enables various digital devices to communicate wirelessly, and is one of the wireless network transmission technologies that were originally used to replace infrared communication.

Bluetooth technology is an open global specification for wireless data and voice communication, which is based on a low-cost, close-range wireless connection to create a special connection for fixed and mobile device communication environments.

Its substance is to establish a common radio air interface (Radio Air Interface) for the communication environment between fixed or mobile devices, and to further combine communication technology with computer technology so that various 3C devices can communicate or operate with each other in a close range without wires or cables connected to each other.

Simply put, Bluetooth technology is a technology that uses low-power radios to transmit data between various 3C devices to each other. Bluetooth works in the global common 2.4GHz ISM (i.e. Industrial, Scientific, Medical) band, using the IEEE802.15 protocol. As an emerging short-range wireless communication technology, it is giving a strong impetus to the development of low-rate wireless personal area networks.

What is a Bluetooth speaker?

Bluetooth Speaker Connection

A Bluetooth speaker is an audio device that has a built-in Bluetooth chip and uses a Bluetooth connection instead of a traditional cable connection, mainly with Bluetooth playback devices such as mobile phones, tablets or laptops.

Bluetooth speakers are mainly portable speakers, generally small and portable, the common Bluetooth speakers on the market are mostly mono speakers, but also emerged some excellent sound quality of multi-channel speakers. With easy to operate, the transmission distance is moderate, the transmission speed is faster and other characteristics.

How does a Bluetooth speaker work?

  1. Bluetooth audio device speakers receive digital audio signals wirelessly via the Bluetooth protocol when paired. 
  2. The radio carrier wave is transmitted wirelessly between the Bluetooth transmitter of the audio device and the BT receiver of the Bluetooth speaker.
  3. Using the modulated signal, the Bluetooth receiver decodes the carrier wave.
  4. The A2DP-encoded audio signal is then decoded to produce the desired digital audio signal. 
  5. The audio device's bt transmitter speaker receives the digital audio signal from any Bluetooth device wirelessly and plays it through its built-in driver unit.

This process ensures that compressed digital audio files on a mobile phone or tablet can be played back directly as if they were original sound files. These speakers do not require an internet connection to play music, only a connection between Bluetooth devices.

What are the characteristics of Bluetooth speakers?

Waterproof Bluetooth Speaker

  • Wide application

Bluetooth technical specifications of global unity, mobile phones, PDAs, wireless headphones, laptops, cars, medical equipment, computer peripherals and many other devices, as long as you have a Bluetooth adapter, you can easily connect Bluetooth devices, data transmission or voice communication, widespread popularity and good compatibility.

  • Easy to operate

Bluetooth technology is an instant technology, it does not require a fixed infrastructure, and easy to install and set up, do not need a cable to achieve connection, the use of very convenient, just simply complete the pairing can be put into use, the threshold of operation is low.

  • Faster transmission speed

Compared to other methods such as infrared, Bluetooth transmission protocol has obvious advantages in speed, Bluetooth 5.0 theoretical maximum speed of 24Mbps, faster speed can ensure higher sound quality, so that it has enough capacity to carry higher bit rate of music.

  • Transmission distance

Bluetooth's transmission distance is generally within 10 metres, just the size of a room, and can be used to transmit data through walls, ideal for home environments.

Although there are many advantages, but because of the Bluetooth transmission protocol and other 2.4G devices, are sharing this band of signals, which also inevitably lead to signal interference with each other. In addition, the Bluetooth protocol is not a free technology and any manufacturer using it has to pay a royalty to the organization, which is also reflected in the cost, and Bluetooth audio devices are still more expensive than regular products.


Finally, this section of knowledge will answer many of your questions and give you a better understanding of your Bluetooth speaker purchase.

If you want to enjoy better sound quality, it is highly recommended that you stick with ONFORU Bluetooth speakers. They are especially useful for their choice of looks and features.

More Resources:


  • Arbica Mriea

    This article provides a clear and concise explanation of what Bluetooth speakers are and how they work. I appreciate the straightforward approach and insightful details shared here. It’s a great resource for anyone looking to understand the technology behind these popular devices.

  • Timi

    Compact appearance and easy to carry!

Leave a comment

Please note, comments must be approved before they are published

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.