![]() Communication is done through radio waves with a frequency of 2.4 GHz, the same frequency as WIFI connection.Īlready in 1989, the makers of the service came up with the idea of creating a short-link standard for transmitting signals. Bluetooth is what handles the transfer of information between different devices. This connection often applies to a mobile and a pair of wireless headphones or a computer with wireless keyboard or mouse. This is a short connection between two electronic devices that takes place wirelessly. ![]() So how does Bluetooth work? Why is it used?ĭo you own a smartphone, laptop, tablet or pair of wireless headphones? Then you have probably used Bluetooth at some point. But the fact is that Bluetooth is a pretty exciting subject. More than that, most people don’t think about Bluetooth. Many people know that it is something that helps connect different devices. But for just listening to audio, any Bluetooth headphones should be suitable, so your choice of headphones should depend more on their sound quality and your preference.Ĭheck our recommendations for the best Bluetooth headphones.Bluetooth is a word we hear often. Also, if you often watch movies or play a lot of games with your headsets, then having additional low latency codecs will improve your viewing experience. However, if you usually interact a lot with your headphones, to make calls or control media playback, then having all the necessary profiles will be important. Conclusionīluetooth is backward compatible, so in most cases, especially if you're only listening to audio, you don't need to worry about the different Bluetooth versions, profiles, and codecs. Now that you have a better grasp of how Bluetooth works, you're probably wondering how it affects the sound quality of your headphones. To avoid interference with other devices that may also use the ISM (industrial, science, and medical) bandwidth of 2.4Ghz, Bluetooth devices randomly hop between frequencies 1600 times per second until all the packets are transferred. Pairing is just the bonding procedure between devices so that you don't have to enter access or security information, like passwords or passkeys, each time the devices need to establish a connection. The simplest explanation for how Bluetooth works is that data/audio is continuously transferred from a paired Bluetooth transmitter to a paired receiver. ![]() Some companies have proprietary codecs like Samsung's UHQaudio and Sony's LDAC however, the 3 main codecs that most listeners are familiar with are SBC (Subband Coding), AAC (Advanced Audio Coding), and aptX.įor more information on codecs check our SBC vs AptX article. For wireless headphones, there are a couple of codecs to improve both sound quality and/or latency. Bluetooth CodecsĬodecs are the encoding and decoding algorithms that compress data into manageable packets for faster and more reliable transmission. Note: There are a lot more Bluetooth profiles available, but we only listed those relevant to wireless Bluetooth headphones. The latest version of this profile gives you direct control over the volume of your device instead of just the headset/headphones. This is the most important profile for Bluetooth headphones as mono audio is not suited for listening to music.ĪVRCP - Audio/Video Remote Control Profile - Adds control for media playback such as skipping tracks, play/pause, and volume control. Adds more controls to the HSP profile like voice dialing, redialing, and better mono audio quality.Ī2DP- Advanced Audio Distribution Profile - Stereo audio transmission. HFP - Handsfree Profile - Advanced headset functionality. ![]() This profile allows for a microphone input and 64 kbps mono audio. HSP - Headset Profile - Basic headset functionality. ![]() However, we have yet to test the Bluetooth 5.0's capabilities for ourselves. It also has a new feature called Slot Availability Masking (SAM) which can detect and prevent interference on neighboring bands for a more efficient use of broadcasting channels. It's speculated to have twice the bandwidth of Bluetooth 4.2 LE and 4x the range. The most recent iteration of Bluetooth, better suited for the Internet of Things (IoT). ![]()
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