ImPulsar4
What happens when a quadraphonic recording is folded down to two channels, seeded with interference, then unfolded back to four? What comes back sounds almost like the original — but subtly wrong. Spatial certainty is gone; what should be here appears there.
ImPulsar4 uses the QS Regular Matrix — an algorithm from the 1970s for encoding four audio channels onto two — as an instrument of displacement. Elementary sounds are encoded, interfered with, and decoded across four channels, producing unexpected moments of spatial serendipity through intentional phase variations.
Explore the interactive web piece, which encodes, interferes with, and decodes sound live in the browser: