Real-time low latency movement sonification in stroke rehabilitation based on a mobile platform

Mobile hardware platforms are a major requirement for interactive movement sonification. Emerging applications for the computationally demanding auditory feedback technique are stroke rehabilitation and assisted training in sports. This paper presents and evaluates a smartphone based hardware platform for interactive, low latency movement sonification based on inertial measurement units. In contrast to existing hardware platforms the proposed platform enables low latency and battery powered long-term training sessions and improved usability in stroke rehabilitation by an intuitive graphical user interface and wearability. The evaluation focuses on real-time operation performance and overall latency. Furthermore, the overall latency of the smartphone-based platform are compared to results of a heterogeneous RISC/DSP and a PC-based processing platform.