STMicroelectronics AEK-CON-C1D9031 Connector Board

The Electric Vehicle Warning Sounds (AVAS) system has become a growing application for automotive audio. New vehicles require the AVAS system to alert pedestrians of the presence of electric-powered vehicles generating much less noise. Warning sounds may be driver-triggered (like a horn) or automatic, mimicking engine sounds. The speed slider can be applied to modify the played sound to simulate a change in engine rpm.

According to government regulations, in 2021, the vehicle must make a continuous noise level of at least 56dBA (within 2 meters) if it goes 20km/h (12mph) or slower and a maximum of 75dBA. Combining AEKAUD-D903V1 with AEK-MCU-C1MLIT1 through AEK-CON-C1D9031 offers a viable low-cost solution for entry-level AVAS systems. The CAN interface allows remote control of several audio submodules that can be placed around the vehicle.