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These systems often also implement Headset (HSP) or Hands-Free (HFP) profiles for telephone calls, which may be used separately. Each 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. [2] This profile relies on AVDTP and GAVDP.
The head unit provides a user interface for the vehicle's information and entertainment media components: AM/FM radio, satellite radio, DVDs/CDs, cassette tapes (although these are now uncommon), USB MP3, dashcams, GPS navigation, Bluetooth, Wi-Fi, and sometimes vehicle systems status.
SBC, or low-complexity subband codec, is an audio subband codec specified by the Bluetooth Special Interest Group (SIG) for the Advanced Audio Distribution Profile (A2DP). [1] SBC is a digital audio encoder and decoder used to transfer data to Bluetooth audio output devices like headphones or loudspeakers. It can also be used on the Internet. [2]
With a 2.0 channel input (stereo or multi-channel down-mix), the signal is enhanced to produce a multi-channel-like surround sound signal, delivering profound surround sound perception and an ...
It employs UHF radio waves in the ISM bands, from 2.402 GHz to 2.48 GHz. [3] It is mainly used as an alternative to wired connections to exchange files between nearby portable devices and connect cell phones and music players with wireless headphones, wireless speakers, HIFI systems, car audio and wireless transmission between TVs and soundbars.
Used by the remote control profile to transfer AV/C commands over an L2CAP channel. The music control buttons on a stereo headset use this protocol to control the music player. In the protocol stack, AVCTP is bound to L2CAP.
Mobile players for physical media have been provided for vinyl records, 8-track tapes, cassette tapes, compact discs, and MP3s.The increased sophistication of the vehicle audio system to accommodate such media has made the audio unit a common target of car break-ins, so these are equipped with anti-theft systems too.
MOST (Media Oriented Systems Transport) is a high-speed multimedia network technology for the automotive industry. It can be used for applications inside or outside the car. It can be used for applications inside or outside the car.