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

US10264999B2 · kind B2 · utility

Assignee

• Massachusetts Institute of Technology · US

Inventors

• Joseph Lacirignola · Beverly, US
• Trina Rae Vian · Westford, US
• Christopher J. Smalt · Arlington, US
• David F. Aubin, Jr. · Pelham, US
• David C. Maurer · Stoneham, US
• Mary Katherine Byrd · Arlington, US
• Christine M. Weston · Cambridge, US
• Kerry Johnson · Somerville, US
• Shakti Davis · Arlington, US
• Olha Townsend · Providence, US
• Paul Thomas Calamia · Redmond, US
• Edward H. Chen · San Jose, US
• Paula P. Collins · Arlington, US

Key dates

• Filing date: Jan 5, 2018
• Grant date: Apr 23, 2019
• Expiry date: Jan 5, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/0219
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

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.