How to make infrasound waves or strong radiation at home and let neighbors die?

How deadly? I can tell you that if it is radiation, if the emitter is in your hand, you will be the first unlucky person, not your neighbor, and infrasound is even more impossible. It takes an amazing power rate to reach the infrasound frequency harmful to people's health. It is estimated that you can't have a high-voltage power supply greater than 1000V, so find another way.