Here is an item of historical interest. I recommend that you do NOT build such a device, for reasons that will become obvious.

In 1964 French scientist Vladimir Gavreau discovered and began to experiment on the effects of infrasound upon humans. He eventually prefected a device that created, and protection against, low frequency ("infra-", not "sub-") sound that could injure and (conjectured) perhaps kill humans. He received patents. It's not known if such devices have ever been used in warfare/ covert actions.
Here is where I learned of it: the series (on Netflix) "Dark Matters: Twisted but True" episode 5, "The sound of death" (2011). This is a great series, hosted by John Noble, an actor whom I erroneously thought was one of the shadowy guys from "X-files" but no. He has an impressive resume, but did not appear in the X-files. He does play the mad scientist in "Fringe" (which I heartily recommend as a good X-files replacement). Sorry if I come off like a Netflix shill but hey, that's where I get a lot of my video entertainment!
You can also Wiki "Gavreau" and no doubt find other sources.
An acoustic weapon appears in Ayn Rand's famous "Atlas Shrugged." If you're familiar with this novel, you won't accuse Rand of knowing much about science. It'd be great if Galt's motor or Rearden Metal really existed, however! It is my opinion, and based upon the Burroughs (fiction?) quoted in the wiki, that while such a weapon is no doubt possible, it would be immensely inefficient. But still, think of the low frequency response!

In 1964 French scientist Vladimir Gavreau discovered and began to experiment on the effects of infrasound upon humans. He eventually prefected a device that created, and protection against, low frequency ("infra-", not "sub-") sound that could injure and (conjectured) perhaps kill humans. He received patents. It's not known if such devices have ever been used in warfare/ covert actions.
Here is where I learned of it: the series (on Netflix) "Dark Matters: Twisted but True" episode 5, "The sound of death" (2011). This is a great series, hosted by John Noble, an actor whom I erroneously thought was one of the shadowy guys from "X-files" but no. He has an impressive resume, but did not appear in the X-files. He does play the mad scientist in "Fringe" (which I heartily recommend as a good X-files replacement). Sorry if I come off like a Netflix shill but hey, that's where I get a lot of my video entertainment!
You can also Wiki "Gavreau" and no doubt find other sources.
An acoustic weapon appears in Ayn Rand's famous "Atlas Shrugged." If you're familiar with this novel, you won't accuse Rand of knowing much about science. It'd be great if Galt's motor or Rearden Metal really existed, however! It is my opinion, and based upon the Burroughs (fiction?) quoted in the wiki, that while such a weapon is no doubt possible, it would be immensely inefficient. But still, think of the low frequency response!
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