最終更新:2022-08-02 (火) 08:24:33 (604d)
Bluetooth/オーディオ
Bluetooth/プロファイル
A2DP
- Advanced Audio Distribution Profile
- 16~48KHz
SBC 127~345kbps
AVRCP
HFP
- Hands Free Profile
- has somewhat extended functionality to HSP and was originally intended to control a cell phone from a stationary, in-car, hands-free unit.
- Audio transmitted over a synchronous SCO channel and a separate data channel used for controlling the audio stream (AT commands)
HSP
- Handset Profile
CVSD 64kbps 8KHz モノラル - Audio transmitted over a synchronous SCO channel
- Mostly made obsolete by HFP profile, but still supported by some legacy devices
2008/12/18 HSP 1.2 2001/02/22 HSP 1.1? Bluetooth 1.1
SCO
- Synchronous Connection Oriented
- 音声オーディオはL2CAPなどを経由せず、ベースバンド層とダイレクトにやり取りされる