Plasma radio
I'm not sure that this can be attributed to the topic “working with sound”, but I did not find a more suitable blog.
A simple but quite spectacular experience can be carried out with a 90-meter steel wire hanging on a 110-meter tower not far from a powerful radio transmitter :
Due to the long length of the wire, it absorbs well the energy of a radio wave broadcasting at a frequency of 549 kHz with amplitude modulation. This allows you to hear the modulating audio signal without any additional devices, directly from the vibrations of a powerful electric arc coming from this wire into the ground.
A simple but quite spectacular experience can be carried out with a 90-meter steel wire hanging on a 110-meter tower not far from a powerful radio transmitter :
Due to the long length of the wire, it absorbs well the energy of a radio wave broadcasting at a frequency of 549 kHz with amplitude modulation. This allows you to hear the modulating audio signal without any additional devices, directly from the vibrations of a powerful electric arc coming from this wire into the ground.
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Source: https://habr.com/ru/post/113969/
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