Thorpe North & Western LLP
Directional acoustic device
A directional acoustic device configured for producing a directional output along an acoustic axis, including at least one transducer configured to create at least two wave trains which are directed along differing pathways by at least one wave guide, and so disposed that in directions more than ninety degrees off the acoustic axis the SPL of the output is greatly diminished by cancellation effects between the wave trains; improvement over previous gradient and quarter-wave pipe directional systems being enabled.
American Technology Corporation
H
H04R
inventional
Clifton Wynn James J. Wensen
Thompson Croft, III Liu