High Fidelity Noise Exposure Recorder

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.

Researchers

Joseph Lacirignola / David Aubin / Shakti Davis / Edward Chen / Paula Collins / Christopher Smalt / David Maurer / Ninoshka Singh / Christine Weston / Erik Metzger / Kerry Johnson / M. Kate Byrd / Thomas Quatieri / Ohla Townsend / Paul Calamia / Trina Vian

Departments: Lincoln Laboratory
Technology Areas: Biotechnology: Sensors & Monitoring / Industrial Engineering & Automation: Manufacturing & Equipment / Sensing & Imaging: Acoustics
Impact Areas: Healthy Living

  • high fidelity systems, apparatus, and methods for collecting noise exposure data
    United States of America | Granted | 10,264,999

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