Jeff Rowell 250B
From CCRMA Wiki
Jeffrey Rowell-Reverberant Art
1)Selectable Spring Reverb Two soundboards with high tension springs between them with a controllable damper on each spring. One sound is input on one side and picked up on the other with variable amounts of reverb.
2)Variable Reverb Room A room with a microphone and moveable walls/ceiling which would analyze the pitch of voices within it and attempt to change the shape of the room to highlight harmonics in the voice.
3)Sending Morse Code through reverb and then attempting decoding.
4)Coupled Pendulum Pickups A pair of guitar pickups are mounted on a set of coupled pendulums, and then set in front of two strings vibrating at close but different frequencies. The output of the pickups is then fed into a loudspeaker mounted close behind the system for feedback.