Composite materials comprising an active piezoelectric phase and a passive polymer phase offer significant advantages over their single phase counterparts. These include higher electromechanical performance and vastly enhanced design versatility. Several combinations of polymer/ceramic connectivity… More

This Phase I SBIR research develops a prototype active earplug and hybrid feedforward-feedback active noise control (ANR) algorithm to provide at least 40 dB noise reduction over all frequencies when used in conjunction with a Gentex HGU-56 helmet. Ear insert hardware will be fabricated from an… More

This Small Business Technology Transfer (STTR) Phase I project seeks to demonstrate the concept of a multipurpose active noise control module with broad application to a variety of environments and markets requiring acoustic noise control. Digital Signal Processors (DSP) have matured to the … More

Army SBIR Topic A04-199 identifies the need for an Active Noise Reduction (ANR) Communication Earplug for Helicopter Crew that, when used in combination with a Gentex HGU-56 helmet, provides "effective attenuation of at least 40 dB at all frequencies, with adequate speech intelligibility, while… More

This Small Business Technology Transfer (STTR) Phase II project seeks to develop an inexpensive, multi-purpose active noise reduction (ANR) module and associated software evaluation tools with broad commercial application to many occupational environments. This project will develop signal… More

The objective of this proposal is to develop a reliable method to obtain reduced-order models for the simulation of large-scale seismic and acoustic signature propagation. These reduced-order models should be capable of reproducing results comparable to those obtained from a high-fidelity… More

In Phase 1 research, we developed algorithms to produce reduced-order models from High Performance Computations (HPC). These algorithms are unique, powerful, and particularly well-suited to the acoustic and seismic signal propagation problem. In this Phase 2 proposal, we seek to extend these… More

Sound Innovations Inc will develop a next-generation hearing protection and communication headset to be worn with existing military aviator helmets, particularly the HGU-84/P helmet, that provides protection against noise-induced hearing loss and deliver clear incoming communications. Phase I… More