Retrointerfacing

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Archive for the ‘listener’ tag

Listening to EM fields

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Listening to electromagnetic fields is easy and fun (you can actually listen if a wire is ‘live’ or not, provided AC current is running through). Especially laptop computers emit a lot of EM noise in audible range.

Use the electronics of an old walkman. Perhaps you have the guts of a walkman lying around, perhaps the motor and wheels have already been used to make a solar roller or whatever. Anyway, if the electronics are still in one piece, you can simply hook them up to a pair of headphones or connect them to the audio input of a computer (recording using Audacity). Anyway.. go ahead and discover the enormous amount of fluctuating fields around you … EM field sounds from laptop or see the recording in progress on youtube

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December 23rd, 2008 at 10:29 pm

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Listening to candlelight

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I remembered reading once that manufacturers of electric candles had been using melody-card chips as LED drivers, causing these candles unseeingly to emit music. In order to ‘audify’ this optical sounds, I connected a BPW34 diode (with large Silicon cell, so it actually generates a voltage) to a jack chassis and hooked it up to an amplifier. The following youtube clip shows the results. Strange enough in this candle no beautiful (Christmas) melodies, but a strange repetitive crazy synth….

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December 23rd, 2008 at 10:15 pm

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