In addition, since two-way audio isn’t needed, you could use all your bandwidth to broadcast higher quality audio! Similarly, when listening to music, there was a need to stop/start playing, and adjusting volume. Voice calling, redial, hanging up and accepting calls needed to be built into the protocol itself. For example, in a car, there was a need not only to transfer audio to and from the car, but also to control the phone itself. The concept of Bluetooth profiles came about to differentiate between these use cases and their needs. It supports data transfer in applications such as wearables, IoT devices, gaming, and more. Today, Bluetooth has a wide range of use cases. These first hands-free devices became a popular way of allowing two-way communication of audio data with phones and later laptops. The Bluetooth standard emerged in the late 1990s after years of work by Ericsson Mobile to develop wireless headsets for phones. A2DP, HSP, and your ears - A stroll through Bluetooth history and the ocean of acronyms Finally, we’ll give you some tips on how to avoid this jarring switch in your next video call. We'll also look out into the future of Bluetooth audio and where the experience for audio will improve. We'll look at the two primary profiles, Advanced Audio Distribution Profile (A2DP) and Headset and Hands-Free Profiles (HSP/HFP) and the use cases where each profile excels. In this post we'll introduce you to Bluetooth audio profiles. What's happening behind the scenes is that your Bluetooth headphones are switching from a high-quality audio profile meant for music, to a lower quality, audio delay optimized profile meant for phone calls. Or listening to music on your iPhone when an incoming call disturbs your peace, only for your music to now sound weird, louder, and as if it was recorded inside a tin can. You’ve probably experienced listening to music on your wireless headphones on your way into a video call, only for that music to sound thin and cheap as soon as the hair check pops up. Ever wondered why your Bluetooth headset switches from a very high quality audio experience, to a tiny mono-sound experience when entering video calls? In this blog post we’ll explain exactly what and why that happens, and what’s being done on the Bluetooth side to improve our collective audio experience in the future.
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