Jean-François Laporte has scarcely put down his tools in the last decade and a half as he refines the sounds he’s making. The instrument inventor and composer uses PVC tubes and balloons, plastic tie wraps and compressed air in search of the limits to the noises that can be made from one object striking another. “I just go by the sound,” Laporte said. “It’s an intuitive process. I see what a sound tells me and go from there.”