Optimal Feedback Control Formulation of the Active Noise Cancellation Problem: Pointwise and Distributed

Abstract

Unwanted noise is a by-product of many industrial processes and systems. In active noise cancellation (ANC), one introduces a secondary noise source to generate an acoustic field that interferes destructively with the unwanted noise, and thereby attenuates it. Noise reduction is important to protect listeners in high noise environments from hearing damage, to enhance speech communication, and to reduce noise-induced fatigue. These adverse effects of noise can cause accidents and reduce the productivity of workers.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1994
Accession Number
ADA459697

Entities

People

  • Kambiz C. Zangi

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircraft Noise
  • Closed Loop Systems
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Electrical Engineering
  • Feedback
  • Gaussian Processes
  • Hilbert Space
  • Kalman Filters
  • Mathematical Filters
  • Measurement
  • Partial Differential Equations
  • Random Variables
  • Signal Processing
  • Wave Equations

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Seismology
  • Systems Analysis and Design