Rhythmic expressiveness transformations of audio recordings: swing modifications

Fabien Gouyon; Lars Fabig; Jordi Bonada
DAFx-2003 - London
In this paper, we propose a computer software for modifying rhythmic performances of polyphonic musical audio signals. It first describes the rhythmic content of an audio signal (i.e. determination of tempi and beat indexes at the quarter-note and eighth-note levels, as well as estimation of the swing ratio). Then, the signal is transformed in real-time using a time-stretch algorithm. We present basic techniques provided by commercial products for swing modification and compare these to our system.