sound innovations

Hearing Protection for Occupational Environments

Dartmouth College, 2003 - $17,600

The cost of care and compensation of military personnel with noise-induced hearing loss (NIHL) exceeds $300 million annually: the largest defense-related disability expenditure. Existing noise reduction devices (earmuffs, earplugs, and commercial active noise reduction headsets) do not adequately provide the broadband noise reduction necessary to prevent NIHL. Over the course of several years, this E-Team devised, tested and commercialized a novel, high performance active noise reduction system for communication and hearing protection headsets through feedforward adaptive least mean square (LMS) control.

The team, now incorporated as Sound Innovations, Inc., has received $1.2 million in federal funding.

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