I stood under the transmission lines with my olympus ls-7 recorder in nw ohio to get the sound. According to a map i found online, the lines are indeed 765,000 volts phase to phase, four lines bundled for each phase.
Recorded with samsung galaxy s21. You don't have to credit me anywhere but if you liked this sound effect, you can let me know in the comments where you've used it. Thanks!.
This noise is white noise powered by itsself. So f. E. Random value 0. 63 will result in pow(0. 63, 0. 63). The algorithm for this noise was created two years ago by myself in c++, as an imitation of noise generators in supercollider 2.