Tempo estimation and beat tracking with adaptive input selection

We present details of our submissions to the Audio Tempo Extraction and Audio Beat Tracking contests within MIREX 2006. The approach we adopt makes use of our existing beat tracking technique with a modified tempo extraction stage, and with the provision of three different onset detection functions to act as input. For each onset detection function we extract potential beat locations and then employ a beat tracking confidence measure to find the most appropriate input representation for a given audio signal. The beats which yield the highest confidence are then extracted as the output of the system.