...a 2x1m metal plate hung on a stand or frame is stimulated by amplifier driven modified motors used as strong transducers, and sensored by
pickups. The computer controlled feedback uses digital filters and dynamics
effects as signal processing to try to resonate the plates within their individual
overtones. These playable feedback filters are controlled as notes by playing
increasing and decreasing sounds near the composed frequencies of the notes
which evokes speech and “singing-like” musical phrases in a wide range of
frequencies typical of the chosen material. As a result of this arrangement,
normally barely detectable resonances are produced in the musical space and
create metallic-sounding multi-tonal clusters, whereby, due to the formation of
formants and noise between the shifts, fast phrases and extremely slow
polyphonic chords emerge from the sound plate. What initially appears as chaotic
movements can soon be experienced as structured recurring patterns...

 Winfried Ritsch