Created by Yingjie Bei, After Tone is a sound installation built from fifty-six speakers arranged along a continuous Möbius loop. An ultra-short tone is triggered in sequence, moving from one speaker to the next, circulating around the loop.
The structure is conceived as an exposed technological body. The frame and electronic components are visible and reduced to their operational elements. In this configuration, sound functions as a spatial element, a moving point that traces the geometry of the Möbius path into the surrounding room.
Yingjie Bei
The project examines recurrence and perception. By routing a single tone through an infinite loop, the install curves linear time into a cycling structure. The installation sets up conditions for sensing cycles, duration, and the fine thresholds of awareness that emerge between listening bodies, architectural space, and technological systems.












