Faster Connection and Discovery and higher transmission speed of up to 721 kbit/s. Bluetooth 1.2 (2003): Adaptive frequency-hopping spread spectrum (AFH) and Extended Synchronous Connections (eSCO) improve resistance to radio frequency interference and voice quality of audio links.Bluetooth 1.1 (2001): Fix many errors found in v1.0B, and add the possibility of non-encrypted channels.Bluetooth 1.0 and 1.0B (1999): Products weren't interoperable and anonymity wasn't possible.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 technology develops rapidly. 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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