Modelling Tennis Rallies Using Information from both Video and Audio Signals

Sports can contain events that occur too quickly to be captured by 25 frames-per-second video. An audio signal, sampled at a much higher temporal rate, provides a way to detect events over a shorter timescale. However, there are complications such as noise, echoes and latencies. Nevertheless, we have found statistical evidence that could allow an audio-based stroke detector to predict future events, allowing it to avoid potentially misleading sound event features.