Indoor acoustic simulator for ultrasonic broadband signals with Doppler effect

In this paper we present an indoor acoustics simulator that is able to deal with high bandwidth ultrasonic signals. The simulator can handle the multiple reflections present in a room, which could be produced by the room walls and by the objects inside it. Moreover, it takes into account the transducer’s beam patterns as well as the ultrasonic wave propagation losses. Additionally the simulator may be used to simulate the Doppler effect for any type of movement. The simulator was implemented using Matlab and is freely available, so that it can be easily modified by the user. Field tests have shown that the simulator is very accurate, turning it into a valuable tool to study and compare different ultrasonic pulses or ultrasonic location systems under controlled conditions.