Mono-Replay : a software tool for digitized sound animation
Résumé
This article describes Mono-Replay, a software environment designed for sound animation. "Sound animation" in this context means musical performance based on various modes of replay and transformation of all kinds of recorded music samples. Sound animation using Mono-Replay is a two-step process, including an off-line analysis phase and on-line performance or synthesis phase. The analysis phase proceeds with time segmentation, and the set up of anchor points corresponding to temporal musical discourse parameters (notes, pulses, events). This allows, at the performance phase, for control of timing, playback position, playback speed, and a variety of spectral effects, with the help of gesture interfaces. Animation principles and software features of Mono-Replay are described. Two examples of sound animation based on beat tracking and transient detection algorithms are presented (a multitrack record of Superstition by Steve Wonder and Jeff Beck and Accidents/Harmoniques, an electroacoustic piece by Bernard Parmegiani). With the help of these two contrasted examples, the fundamental principles of "sound animation" are reviewed: parameters of musical discourse, audio file segmentation, gestural control and interaction for animation at the performance stage.
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