Now the audience composes the music

Today I visited Artmusic's installation Thin Air which features music by British contemporary composer Helen Ottoway, and uses new technology to create an extraordinarily effective interactive

One of the aims in creating Thin Air is to encourage a personal and physical interface between people and the building. In this way the act of being and moving in a space becomes a dance; simple

Soundbeam converts physical movement into sound using ultrasonic reflection, in a process similar to that used in radar. Sensors emit beams of ultrasound; interruptions of the beams by movement cause echoes of the ultrasonic pulses to be reflected back to the sensor. Information about the speed and direction of movement is translated into digital code (MIDI). For Thin Air

Experience a brief, but high quality, sample of this inspired sound sculpture via this file - who is going to be first to bring this wonderful installation to the US? -
* Thin Air composer Helen Ottoway is a founder member of new music/performance groups Regular Music and 3 or 4 Composers. Commissions include String Quartet No.1 (1998) for Nottinghamshire County Council. She was associate composer for In Praise of Trees, a major arts project curated by Annette Ratusznuak, in

Images of St John's Maddermarket from Simon Knott's excellent Norfolkchurches.co.uk. Report broken links, missing images and other errors to - overgrownpath at hotmail dot co dot uk
If you enjoyed this post take An Overgrown Path to Hildegard comes to Norwich via IRCAM and Darmstadt
Comments
An intriguing ... well, whatever it is, and I wish I could experience it. However, I find something a bit off-putting about it.
This thought occurred first when I saw the word "choreography." That word generally implies two things to me - some intent on the part of the choreographer, and the possibility of it being repeated (more or less) at a later time if it's been "notated" somehow. Neither concept applies here as far as I can tell.
Surely this could be done just as effectively with computer-generated random numbers to control sounds, could it not? If the number of people present is the only thing that's distiguishable, then just have a sensor at the door to generate another "channel" for each additional person.
It's an interesting notion - as I walk around, I may get the impression that I'm "controlling" the sound, but it doesn't sound like I have any effective control at all. A dog or a robot or a random number has every bit as much "control" as I do. In other words, I could think of it as "apparent audience participation."
What's the John cage piece - "32 Radios"? In such a case, it's at least clear what's happening.
This doesn't make it "bad," but I'm just not sure what to make of it.
But as I said, I'd still like to try it out!