Hypersonic sounds, directional sound.

. EMusic

21:09:02 Hypersonic sounds, directional sound.
According to the American magazine 'Popular Science' sounds hypersonic should be the next substantial innovation in acoustic perception. In a schematic article summarizes the different applications of the audio direct, hypersonic sound or if you prefer, you should already find the first commercial applications this fall in Hypersonic Speakers of American Technology, which have solved the problems of fidelity and distortion creating the sound to over 20,000 cycles per second. Among the applications, therefore, direct the ears of those who are looking at a product in the supermarket, raising the level of bullets sound up to 145 decibels, which is 50 times more than the threshold of pain, greater realism in the cinema with the sound that really follow the movements actors, megaphones for lifeguards and guards who warn only those directly involved in the infringements, and speakers for PC that does not disturb the neighbors. This categorization follows the trials under way for several months .