HEARING, ERGONOMICS, & ACOUSTICS RESOURCES LLC

Hearing, Ergonomics, & Acoustics Resources LLC (HEAR LLC) is a Fairfax Station, Virginia-based R&D firm specializing in auditory safety, hearing protection, and military auditory training systems. The company offers expertise in noise reduction rating (NRR) and real-ear attenuation at threshold (REAT) testing, product design and evaluation, custom experimental design, expert witness services, and intellectual property analysis. HEAR LLC developed the Portable Auditory Situation Awareness Training (PASAT) system — a computerized platform using speaker arrays and calibrated audio libraries to train military personnel to localize and identify auditory signals in complex acoustic environments, and to assess the impact of hearing protection devices and tactical communications systems on situational awareness. The company holds multiple U.S. utility patents for hearable, hearing protector, earphone, and hearing aid technologies. Led by CTO John G. Casali, HEAR LLC received two DoD SBIR awards totaling approximately $1.125M.