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date: 16 November 2019

Cell Phone Orchestra [Mobile]locked

  • Anne Beetem Acker

Extract

[Mobile]

Ensemble of performers using programmable mobile (cellular) phones. MoPhoO, the Mobile Phone Orchestra of CCRMA at Stanford University, formed in 2007 with 16 phones and players under the supervision of Ge Wang, Georg Essl, and Henri Penttinen, claims to be the first repertoire- and ensemble-based mobile phone performance group. Notably it uses only the phone’s onboard speakers. Since MoPhoO’s founding, other cell phone ensembles have been founded at the University of Michigan, Berlin (both founded by Georg Essl), and in Helsinki (directors Henri Penttinen and Antti Jylhä). The Michigan ensemble uses custom-made wearable speaker systems. Repertoire consists of scored compositions, sonic sculpture, and structured improvisation. For each piece, the phones run customised programmes that direct how they respond sonically to inputs that can come from the keypad or touchpad, the accelerometer positions, the built-in camera, or the microphone. For example, the keypad numbers can be mapped to different pitches in different modes, or to any sort of sound or sequence of sounds. While cell phones have considerable computing capability, they have limited acoustic bandwidth, but partial selection can suggest bass frequencies that are below the cell phone’s actual capability....

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