Bluetooth technology is a wireless protocol that connects electronic devices while they are close to each another.
Instead of creating a local-area network (LAN) or a wide-area network (WAN), Bluetooth creates a personal-area network (PAN) just for you. Cell phones, for example, can be paired with wireless Bluetooth headsets.
When used in tandem with a Bluetooth-enabled cell phone and successfully paired, you can leave your cell phone in your pocket and perform most of your mobile phone’s functions using your in-ear Bluetooth headset.
The Bluetooth Headset Profile (HSP) is a specification for communication between Bluetooth devices. Compared to the Handsfree Profile (HFP), HSP is a more basic profile. It provides the ability to carry out basic functions such as answering, rejecting and ending calls, as well as adjusting the call audio volume.
The Bluetooth Handsfree Profile (HFP) is a specification for communication between Bluetooth devices. HFP is the profile most commonly used to allow mobile phones to communicate with Bluetooth headsets and car kits. HFP provides the ability to carry out basic functions such as answering, rejecting and ending calls, and adjusting the call audio volume, as well as more advanced features like using the phone's voice dial functionality.
Audio/Video Remote Control Profile (AVRCP) is a profile that allows Bluetooth devices to remotely control audio and video media on another device. For example, by stopping and starting tracks, and skipping to the next or previous track.
This profile defines how multimedia audio can be streamed from one device to another over a Bluetooth connection (so, it is also called Bluetooth Audio Streaming). For example, music can be streamed from a mobile phone, to a wireless headset, hearing aid/cochlear implant streamer, car audio, or from a laptop/desktop to a wireless headset; also, voice can be streamed from a microphone device to a recorder on a PC.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. These systems often also implement Headset (HSP) or Hands-Free (HFP) profiles for telephone calls, which may be used separately.
The DSP processes the audio data in real time in order to reduce wind noise and other interference, giving you outstanding call quality no matter where you are.
Near field communication (NFC) is a set of ideas and technology that enables smartphones and other devices to establish radio communication with each other by touching the devices together or bringing them into proximity to a distance of typically 10 cm (3.9 in) or less.
The aptX audio codec is available for consumer and automotive wireless audio applications, notably the real-time streaming of high quality stereo audio over the Bluetooth A2DP connection/pairing between a "source" device (such as a smartphone, tablet or laptop) and a "sink" accessory (namely a Bluetooth stereo speaker, headset or headphones). aptX technology must be incorporated in both transmitter and receiver to derive the sonic benefits of aptX audio coding over the default sub-band coding (SBC) mandated by the Bluetooth standard. Consumer electronics products bearing the CSR aptX logo are certified for interoperability with other Bluetooth audio products belonging to the aptX ecosystem.