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[popeyespappy]

That's called "noise". You can program a computer to make it, too.

You might be able to program a computer to generate the same frequencies, but you'd still need something like this to turn it into sound.

The Was 3000 by Wyle Laboratories can produce a level of sound up to 165 dB. The speaker’s output is 30,000 watts. This was created primarily to make noise. Using a technique called airstream modulation, it pushes away nitrogen and compressed air through different holes in its system. This allows puffs of air to act as a modulator. This low frequency noise reduction technology can be used in big sites like airports. As a matter of fact, it is being used at the airport in Baltimore/Washington. It also has a military use as it can be utilized to simulate battlefield scenarios.