Sound
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Characteristics of Sound
Sound in brief but remarkeable terms is a vibration, that our ears percieve by the sense of hearing. Most commonly vibrations travel to our ears via the air. The ear then converts these sound waves into nerve impulses that are sent to our brains, where the impulses become sound. To say all that in a more technical language: Sound "is an alternation in pressure, particle displacement, or particle velocity propagated in an elastic material" (Olson Read More... -
Hyper Sound Wave Emissions to Quiet Helicopters
It is possible to disrupt the sound waves coming from a flying helicopter and re-direct those sound waves up. This would mean on a day with no clouds you would not be able to hear the helicopter from the ground. If our International Terrorist enemies cannot hear them, they are much safer from being shot down. The hyper sound waves would be emitted from the skids on the helicopters and face upward like a cone. Careful consideration would be made s Read More... -
Basics of Surround Sound Systems
One of the main aspects that make watching a movie enjoyable is sound and surround sound systems have changed what way sound is reproduced in a movie. When in a movie theater we feel as if we are surrounded on all sides with different sound effects and this is because of a surround sound system. In earlier days we used to have speakers only in the front and it was more like an unidirectional sound that we used to experience in theaters but now a Read More...
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