![]() It includes mandatory support for the low-complexity SBC codec (not to be confused with Bluetooth's voice-signal codecs such as CVSDM), and supports optionally MPEG-1 Part 3/ MPEG-2 Part 3 ( MP2 and MP3), MPEG-2 Part 7/ MPEG-4 Part 3 ( AAC and HE-AAC), and ATRAC, and is extensible to support manufacturer-defined codecs, such as aptX. These systems often also implement Headset (HSP) or Hands-Free (HFP) profiles for telephone calls, which may be used separately.Įach A2DP service, of possibly many, is designed to uni-directionally transfer an audio stream in up to 2 channel stereo, either to or from the Bluetooth host. The Audio/Video Remote Control Profile (AVRCP) is often used in conjunction with A2DP for remote control on devices such as headphones, car audio systems, or stand-alone speaker units. For example, music can be streamed from a mobile phone to a wireless headset, hearing aid/ cochlear implant streamer, or car audio alternately from a laptop/desktop to a wireless headset also, voice can be streamed from a microphone device to a recorder on a PC. This profile defines how multimedia audio can be streamed from one device to another over a Bluetooth connection (it is also called Bluetooth Audio Streaming). ![]() This article summarizes the current definitions of profiles defined and adopted by the Bluetooth SIG and possible applications of each profile.Īdvanced Audio Distribution Profile (A2DP) This may include an outline of the required service record, if appropriate. To perform its task, each profile uses particular options and parameters at each layer of the stack. Specific parts of the Bluetooth protocol stack used by the profile.Devices such as mobile phones can expose additional profiles by installing appropriate apps.Īt a minimum, each profile specification contains information on the following topics: For the Bluetooth Low Energy stack, according to Bluetooth 4.0 a special set of profiles applies.Ī host Operating System can expose a basic set of profiles (namely OBEX, HID and Audio Sink) and manufacturers can add additional profiles to its driver and stack to enhance what their Bluetooth device can do. The profiles provide standards that manufacturers follow to allow devices to use Bluetooth in the intended manner. The way a device uses Bluetooth depends on its profile capabilities. For example, there are Hands-Free Profile (HFP) 1.5 implementations using both Bluetooth 2.0 and Bluetooth 1.2 core specifications. While the profile may use certain features of the core specification, specific versions of profiles are rarely tied to specific versions of the core specification, making them independent of each other. ![]() ![]() It resides on top of the Bluetooth Core Specification and (optionally) additional protocols. A Bluetooth profile is a specification regarding an aspect of Bluetooth-based wireless communication between devices. The specific steps you see next will vary based on which version of Windows you’re using, but it’s all pretty straightforward, and the general verbiage hasn’t changed much over the years.In order to use Bluetooth, a device must be compatible with the subset of Bluetooth profiles (often called services or functions) necessary to use the desired services. (You can also type “Bluetooth” in the Windows Start Menu search to jump to the Bluetooth menu, too.) Right-click the icon and choose “Add a Bluetooth Device” from the context menu. (We’re not going to say that every Bluetooth frustration we’ve ever had was related to failing to notice a device wasn’t in pairing mode, but it’s up there on the list of reasons.)Īfter inserting the dongle (and with the appropriate drivers installed), a Bluetooth icon should appear in the system tray, as seen in the screenshot below. Now is a great time to turn the device on and ensure it is in pairing mode. Now that you have the dongle installed, you’re ready to pair a device. Because, hey, Bluetooth 4.0 might not be cutting edge these days, but old Bluetooth is better than no Bluetooth. If you left everything installed, you can pop into the Device Manager and turn on the old Bluetooth radio. Let’s say, for example, you realize a half hour into a flight that your laptop is missing the updated Bluetooth dongle. It’s also useful to leave it installed, so it’s ready to go on the off chance you need it.
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