Audio samples sourced from my contact mic recordings of the radio towers and associated video projections, triggered by a theremin.  “pulse” refers to the soft vibrations of the towers that I recorded, almost like slow echoey heartbeats that have now stopped beating, while “decay” refers to the fact that the the pulse (presence and memory of the site) has decayed, it is now a mere echo, growing fainter and fainter every day.  the audio and images are triggered using a theremin.