Brown Sierra - rotating wave form
  Year :   2001
  Location :   England
  Worktype :   Sound Installation
  Materials:   4x Retort stands 4x Windscreen wiper motors 4x Speakers 4x Slip Rings 4x Slip ring follower arms 1x Sine tone generator 1x Amplifier 1or 2 Transformers Chop blocs 1x Four way 1x Timer switch
  Info :   -

  Work Details  
  Several metres of speaker wire Rotating wave forms is a sound installation which utilises the Doppler effect to create a constantly changing acoustic environment from a single and constant wave form split into four rotating speakers from a single sine tone source. Motor Show Rotating Sound wave, 2001, by Brown sierra (Pia Gambardella and Paddy Collins). The sound apparatus is home made with bits of speakers, motors, and control mechanisms, which grind out a monotonous tone, but there is a second reference to motion in the applied movement of the listener, which would modulate the pitch, a sort of Doppler Effect, as with emergency services sirens approaching or diminishing. Art Monthly 1999