The “One-Person Choir”: A Multidisciplinary Approach to the Development of an Embodied Human–Computer Interface
Pieter‐Jan Maes, Marc Leman, Katty Kochman, Micheline Lesaffre, Michiel Demey · Computer Music Journal · 2011
The One-Person Choir is a human-computer interface for singers that facilitates gestural control over a digital signal processing (DSP) mod- ule for harmonizing the singing voice in real time (see Figure 1). Harmonization adds extra pitch-shifted voices that are tonally related to the input voice. The interface captures global movements of the upper limbs by means of an integrated network of inertial sensors attached to the upper body of a singer. From these data, gestural cues are extracted and compared with a preconfigured gestural model that has been trained with empirical data. When the gestures of the singer match the preconfigured model, it is possible to control the harmonization of the singing input voice captured by a microphone. Thus, the interface allows a singer to naturally enhance the expressive qualities of his or her voice with the assistance of expressive gestures connected to an electronic