The tuned and sensed wires of the are susceptible to drafts up to pre-storm gusts. (Flies travel at their own risk through these potentially hazardous strands, however, there usually are no fly problems on dry, clear and breezy days.)

mono configuration w/Frap transdcuerUpon entering the pre-amp, the combined signals are fed into an audio amplifier. With a house that has extra windows it is an intercepted realtime multiple sound source. Des Moines Register photographconstruction, 1974-1975

Draft monitor stereo versionand details showing stainless pigtails held taut by stainless steel wires from a Webcor-Chicago wire recorder. As you can see, they approach being less than hair diameter.

Minnesota highway commission version with the preferred solar panel and storage battery was in the basement. (Because of its remore Route 169 location, it was later destroyed by vandals.) The vibrational sound monitoring from the stainless steel strands was mixed with a "straight line of sight sound collection" of anything falling within its focalized listening pathway. Four parabolas were used with each faceing in a N. S. E or W. direction.parabola in '06

This Sharper Image version was not accepted because they wanted it to be retrofitable and be placed into all sorts of window formats.

Preamp to transmitter is top right.A sugar and honey path between several hills connected similar studios whose outputs were wired to FM transmitters and each broadcast a distinct pair of spatial channels. Sensor-contacted membrane floors were covered with a intermittent path of honey leading from exit/entrance. The studio shows a clear plastic oval window on its roof.

Des Moines Register Article: "Leif Brush and the Earth Philharmonic"

Three 9 gauge wires attached to trees at opposite sides of the our lawn passed directly over the garden.

(1974 recorded crickets were played back over this area as the 1975 insects were sounding in late August)

single Raindrop (it seemed to be flat & not a tear drop) Monitor was a twenty foot aluminum spiral and metal plate suspended from a tree.On the outside, a guyed rectilinear jute frame was suspended from a horizontal tree branch with the end being anchored to the ground. Beeswax adhered Shadow sensors on this "pigs tail" below the plate. The spirals potential resonance was diminished by 2 inch balsam wooden dowels placed inline as dampers before and immediately after the plate. Drops which passed through the hole could be identified as dampened thuds which lacked the prolonged ringing that you'd expect to hear if longer portions of the coil were sounded.

Proposed interactive Terrain-bound instrument (not built), 1974

drawing Steel farm tractor seat is attached to a flat spring(y) steel bar. One inch steel plates are attached to in-ground concrete bases. The tie-down of these varying gauges of stainless steel strands was to be X distance and ending secured to and in-ground eye bolt.