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EM Wind Chime
Electromagnetical Field fluctuations produce sounds | |
Somewhat similar to motion detectors that use EM field fluctuations.
In the EM Wind Chime, Electromagnetic field fluctuations drive sound synthesizers. Amplitude of the field fluctuations corresponds to the amplitude of the sound (but not necessarily in a linear way). Tone is fixed.
Our chime
has multiple of these circuits in parallel, each with its own sensor and each with it's own distinctive tone. Because each circuit will naturally have a different sensitivity and because of differences between the sensors (orientation), the different circuits will produce sound differently.
If a person would walk by our device, a pleasant sound would be produced.
This could be hung near a door or in a hallway, to draw attention to visitors (in a pleasing way -not really an alarm).
http://en.wikipedia.org/wiki/Theremin
would it sound like this? [xaviergisz, Jul 05 2006]
Or like this?
Theremin_20Windchimes
<Cough> [egbert, Jul 05 2006]
[link]
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Well, no, that's a very cool instrument, but it wouldn't sound like a Theremin. It would flutter more, be more random, and at the same time it would be much simpler then a Theremin. The tone pitch would be fixed for each circuit. Just a windchime, really. But perhaps it would also have a little bit of the magic that produces the strange sounds between short or long wave radio stations. |
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Is this using the same principle to a Theramin though ? |
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This idea is different in the sense that the traditional Theramin is single-voiced and its pitch is varied with respect to input rather than amplitude ? (or am I wrong here?) |
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Since this idea has fixed pitch - you could ensure harmonic increments to force a nice sound. |
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Why not also vary the 'colour' of each sound (ie morph the waveform of each oscillator as well - might lead to more interesting sounds). |
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oh - and throw in some additional inputs - passive infrared as well... |
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I'm surprised by the theremin wind chimes idea, but it's not quite the same. |
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The theremin works differently. It detects presence, not motion. I think it uses the capacitance between its antennas and the human body to affect an oscillator, a little bit like a metal detector. |
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This device passively senses fluctuating EM fields. |
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in fact throw in an appergiator as well (low BPM) - ideal for interactive chill-out music.... |
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Just thought of something else as well. |
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What about a mechanical set of normal windchimes - but instead when hitting each other to make the 'clang', you generate a MIDI 'noteOn' message when they hit each other, and a 'noteOff' when they disengage..... |
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Maybe somesort of magnetic-based switch - with would vary the velocity of the note as they approach each other.... |
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Well that's simple enough: a low voltage fed to each chime, and scanned rapidly round-robin, so that each chime is only live for a few nanoseconds, and the rest of the time it's an earth. Chime (1) touches chime (3), signal is sent for each one, and corresponding MIDI note data is sent. midibox.org's MIDIO128 should get you started. |
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/edit/ Oh, you want velocity information too. Ah well, I'll leave that to you and the magnets. But yes, I think it's doable. |
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