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AMERICAN TECHNOLOGY CORPORATION
| AMERICAN TECHNOLOGY CORPORATION Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090116660 | In-Band Parametric Sound Generation System - Parametric sound reproduction in high-intensity audio signaling, for example in hailing and warning at relatively large distances, is disclosed in one example by producing a primary audio signal in the audio frequency range, and producing a secondary audio signal in the audio frequency range by modulation of the primary audio signal, wherein the primary signal is chosen to enable an improved effect, for example one of directional reproduction, exploiting greater sensitivity of human hearing, exploiting an efficient or maximum intensity frequency range of a transducer used to reproduce the audio signals, and another parameter effecting distance, intelligibility, or intensity of an audio signal. | 05-07-2009 |
| 20080239876 | High intensity vehicle proximity acoustics - An acoustic human and animal behavior modification system that is capable of creating a zone of exclusion immediately adjacent a surface vehicle comprises an array of acoustic transducers disposed on the vehicle in a location not readily seen nor accessible by humans adjacent the vehicle, and is configured to project an acoustic output radially outward in a radial sector at sound pressure levels above the ordinary human pain threshold to motivate animals and humans to move away from a vehicle or change their behavior. | 10-02-2008 |