Massachusetts Institute of Technology

Mary Katherine Byrd

Trina Rae Vian

Joseph John Lacirignola

David Christopher Maurer

Edward H Chen

David Francis Aubin, Jr

Christopher J Smalt

Kerry Alexander Johnson

Paula P Collins

Christine Michelle Weston

Paul T Calamia

Shakti Davis

Olha Townsend

Systems, apparatus, and methods for collecting, interpreting, and utilizing noise exposure data may include sensors to obtain an analog signal representative of impulse noise sound pressure and an analog signal representative of continuous noise sound pressure. At least one ADC may generate digital signals by sampling the analog signals at rates equal to or greater than twice the reciprocal of a minimum impulse noise rise time. Accelerometers may obtain data in close proximity to and remote from the sensors. At least one processor may include a first combining node to combine the digital signals to represent both the continuous noise and the impulse noise, a shock-artifact detection filter to identify a time frame including a shock artifact based on the accelerometry data, a frequency filter to generate a background-removed audio signal, an adaptive filter to estimate the shock artifact, and a second combining node to produce a shock-artifact-free audio signal.

High fidelity systems, apparatus, and methods for collecting noise exposure data

Growing community of inventors

Arlington, MA, United States of America

Mary Katherine Byrd