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One thing I'm surprised you didn't mention is infrasound[1], which is sound so low that it can potentially damage the human body. Some of the newer non-lethal w

by SEJeff 12y ago

One thing I'm surprised you didn't mention is infrasound[1], which is sound so low that it can potentially damage the human body. Some of the newer non-lethal weapons the US military use for crowd control include a directional infrasound "gun" that basically vibrates your inner organs fast enough to make everyone super nauseous. [1] http://en.wikipedia.org/wiki/Infrasound http://en.wikipedia.org/wiki/Infrasound

fl0wenol 12y ago
Infrasound is about a specific frequency range of sound which isn't audible but still carries energy (which is why it can be dangerous). This article was about a wideband sound that was so loud that it defies comparison. Loudness is related to the amplitude, or "height" of the wave, not frequency.
- SEJeff 12y ago
  Oh agreed, the article just goes into so much detail about sound. Seemed relevant (in my head).
Anechoic 12y ago
Some of the newer non-lethal weapons the US military use for crowd control include a directional infrasound "gun" that basically vibrates your inner organs fast enough to make everyone super nauseous. Do you have a cite for this? A "directional" outdoor infrasound weapon would be huge (10s of feet) and quick web search seems to indicate these types of weapon are at best "not mature" and at worst fiction.
- 001sky 12y ago
  http://www.globalsecurity.org/military/systems/munitions/accoustic.htm http://www.globalsecurity.org/military/systems/munitions/acc...
  - Anechoic 12y ago
    That article describes a theoretical infrasound weapon, not something that is being used today: But this [infrasound weapon] has seemed to be not a very practical weapon, since large banks of speakers were required to provide directionality, and power demands were deemed excessive. The article goes on to describe LRAD which does exist and has been deployed, but is a high-frequency weapon, not an infrasound weapon (and can be defended against with a good pair of earplugs).

by SEJeff 12y ago

fl0wenol 12y ago

Infrasound is about a specific frequency range of sound which isn't audible but still carries energy (which is why it can be dangerous). This article was about a wideband sound that was so loud that it defies comparison. Loudness is related to the amplitude, or "height" of the wave, not frequency.

SEJeff 12y ago
Oh agreed, the article just goes into so much detail about sound. Seemed relevant (in my head).

Anechoic 12y ago

Some of the newer non-lethal weapons the US military use for crowd control include a directional infrasound "gun" that basically vibrates your inner organs fast enough to make everyone super nauseous. Do you have a cite for this? A "directional" outdoor infrasound weapon would be huge (10s of feet) and quick web search seems to indicate these types of weapon are at best "not mature" and at worst fiction.

001sky 12y ago
http://www.globalsecurity.org/military/systems/munitions/accoustic.htm http://www.globalsecurity.org/military/systems/munitions/acc...
- Anechoic 12y ago
  That article describes a theoretical infrasound weapon, not something that is being used today: But this [infrasound weapon] has seemed to be not a very practical weapon, since large banks of speakers were required to provide directionality, and power demands were deemed excessive. The article goes on to describe LRAD which does exist and has been deployed, but is a high-frequency weapon, not an infrasound weapon (and can be defended against with a good pair of earplugs).