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SENSORY THREADS: SONIFYING IMPERCEPTIBLE PHENOMENA IN THE WILD

Sensory Threads is a pervasive multi-person interactive experience in which sensors monitor phenomena that are imperceptible or periphery to our everyday senses. These phenomena include light temperature, heart-rate and spatialdensity. Participantseachwearasensorastheymovearound an urban environment, and the sensor data is mapped in realtime to an interactive soundscape which is transmitted wirelessly back to the participants. This paper discusses the design requirements for the Sensory Threads soundscape. These requirements include intuitive mappings between sensor data and audible representation and the ability for participants to identify individual sensor representations within the overall soundscape mix. Our solutions to these requirements draw upon work from divergent research fields such as musical interface design, data sonification, auditory scene analysis, and the theory of electroacoustic music. We discuss mapping strategies between sensor data and audible representation, our decisions about sound design and issues surrounding the concurrent presentation of multiple data sets. We also explore the synergy and tension between functional and aesthetic design, considering in particular how affective design can provide solutions to functional requirements.