Entwicklung eines drahtlosen, zeitvarianten Binauralsystems auf Ultraschallbasis

In this thesis a wireless head-tracking system based on ultrasonic is described. The head tracker detects the laterality of the head movements in real-time and provides these data for the surround sound auralization unit. The auralization unit will render the audio information to maintain a static audio environment around the listener. Linked with a video console, these headphones will be part of rear-seat car entertainment system. As a consumer product it has to be robust but accurate enough to work properly in different situations in vehicle interiors. For this purpose, the negative effects of reflections and noise should be minimized. Furthermore, the wireless headphone unit has to be optimized for low energy consumption for durability reasons. Above all, the head tracking system should allow for multi-usability in order to serve a number of passengers in the vehicle simultaneously. This thesis aims to present a variety of features from different signal processing domains and examines whether they can be employed for this specific task. Finally, the implementation of different tracking algorithms in the real time software Pure Data (PD) is described with the aim to evaluate and compare them to a wired reference system under various aspects.