Adaptive warning signal for use as Martin horn for vehicles, particularly rescue- and police vehicles or electric cars, is generated as sound or noise by vehicle such that volume of sound is adjusted to ambient noise levels

摘要

The adaptive warning signal is generated as a sound or noise by a vehicle such that the volume of the sound is adjusted to the ambient noise levels. The signal is adapted by the measurement of the ambient noise levels, where the measured value is inputted to a controller. The output of the controller determines the volume of the warning signal, where a version of the controller has a non-linear output. The natural volume of the vehicle is evaluated by the controller, where the measured value of the ambient noise levels is removed for the warning signal.