Vehicle Systems
Audio System
The audio system in the car contains a Bluetooth adapter and both internal and external speakers. The Bluetooth audio adapter is intended to be used both for hands-free calling with a cellphone and streaming music from portable players. It also has a sound input via 3.5mm audio jack and can output to either of the two speaker sets, or both of them.
The system also has an amplifier to interface the onboard microphone with the external speakers. The two sets of speakers operate independently and simultaneously.
Block diagram:
