Real-time phase vocoder manipulation by runner’s pace

This paper presents a method for using a runner’s pace for real-time control of the time-scaling facility of a phase vocoder, resulting in the automated synchronization of an audio track tempo to the generated control signal. The in-crease in usage of portable music players during exercise has given rise to the development of new personal exercise aids, most notably the Nike+iPod system, which relies on embedded sensor technologies to provide kinematic work-out statistics. There are also systems that select songs based on the measured step frequency of a runner. The proposed system also uses the pace of a runner, but this information is used to change the tempo of the music