Parametric array: Difference between revisions

Revision as of 00:17, 4 December 2006

Revision as of 00:18, 4 December 2006

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The parametric array is a nonlinear transduction mechanism that allows the generation of narrow, nearly sidelobe free beams of low frequency sound, through the mixing of higher frequency sound wave beams, effectively overcoming the diffraction limit (a kind of spatial 'uncertainty principle') associated with linear means of sound generation and scattering. Applications include underwater sound [http://www.bayshoretechlabs.com], medical ultrasound, underground sesimic prospecting, and directional high-fidelity commercial audio systems.