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All India Institute of Speech and Hearing, Mysuru
(An Autonomous institute Under Ministry of Health and Family Welfare, Government of India.)

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Active noise control primer / Scott D. Snyder.

By: Material type: TextSeries: AIP series in modern acoustics and signal processingPublication details: New York : AIP Press : Springer, c2000.Description: xiii, 159 p. : 75 ill. ; 25 cmISBN:
  • 038798951X (hard cover : alk. paper)
Subject(s): DDC classification:
  • 620.23 SNY 21
LOC classification:
  • TD892 .S58 2000
Online resources:
Contents:
1. Introduction.- Welcome to the World of Active Noise Control!.- Summary.- Do I Have to Read the Whole Book?.- What Is Active Noise Control?.- Adaptive Feedforward Active Control Noise.- Advanced Reading.- 2. Background: Fundamentals of Sound.- What Is Sound?.- What Is Noise?.- Quantifying Sound Levels.- Sound Waves.- Frequency Analysis.- Sine Waves.- Fourier Analysis.- Harmonics.- 1. Anything that Rotates.- 2. Many Devices Which Use Mains Electricity.- 3. Devices Which Are Driven Beyond Their Capabilities.- Human Perception of Sound.- Acceptable Sound Levels.- 3. Fundamentals of Noise Control.- Prerequisite Discussion: Power and Impedance.- The Magnitude of Acoustic Power.- Decibel Units for Acoustic Power.- Power, Pressure, and Hearing Loss.- Real and Imaginary Impedancec.- What Is Noise Control?.- What Is Passive Noise Control.- What is Active Noise Control?.- 4. Free Space Noise Control.- Passive Noise Control Approaches.- Control Control Approaches.- 5. Enclosed Space Noise Control.- Where Does the Sound Come From?.- How Does the Sound Get Out Again?.- How Does the Sound Field Arrange Itself?.- Passive Noise Control Approaches.- Active Noise Control Approaches.- 6. Control of Sound Propagation in Ducts.- Sound Fields in Ducts.- Modes in Ducts.- Impedance in Ducts.- Passive Noise Control Approaches.- Sidebranch Resonator.- Expansion Chamber.- Helmholtz Filter.- Dissipative Passive Control Techniques.- Active Noise Control Approaches.- Reference and Error Signal Quality.- Reference Sensor/Control Source Separation Distance.- Control Source Position in the Duct.- Duct Response Characteristics.- 7. Active Noise Controller Overview.- Some Important Facts.- Digital System Requirements.- Controller Output (Digital Control Filter) Requirements.- Adaptive Algorithm Requirements.- 8. Controller Fundamentals.- General Control System Outlines and Definitions.- Physical System Limitations.- Interfacing a Digital System.- Background.- Required Additions for Digital Control.- Overview of the Controller.- Controller Component 1: The Digital Filter.- What Is a Digital Filter?.- Specifying the "Appropriate" Digital Filter.- Specifying the Digital Filter Length.- Controller Component 2: The Adaptive Algorithm.- Background: Making Use of Adaptive Signal Processing.- Gradient Descent Algorithms.- Evaluating the Gradient.- The Convergence Coefficient.- Quantization Errors and Leakage.- Slowing Down the Algorithm to Improve Performance.- Controller Component 3: Cancellation Path Modeler.- Selecting the Sample Rate.- So What Is the Optimum Sample Rate?.
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Cover image Item type Current library Home library Collection Shelving location Call number Materials specified Vol info URL Copy number Status Notes Date due Barcode Item holds Item hold queue priority Course reserves
Reference text books All India Institute of Speech and Hearing R-65/3 620.23 SNY (Browse shelf) Available 13618
Total holds: 0

Includes bibliographical references and index.

1. Introduction.- Welcome to the World of Active Noise Control!.- Summary.- Do I Have to Read the Whole Book?.- What Is Active Noise Control?.- Adaptive Feedforward Active Control Noise.- Advanced Reading.- 2. Background: Fundamentals of Sound.- What Is Sound?.- What Is Noise?.- Quantifying Sound Levels.- Sound Waves.- Frequency Analysis.- Sine Waves.- Fourier Analysis.- Harmonics.- 1. Anything that Rotates.- 2. Many Devices Which Use Mains Electricity.- 3. Devices Which Are Driven Beyond Their Capabilities.- Human Perception of Sound.- Acceptable Sound Levels.- 3. Fundamentals of Noise Control.- Prerequisite Discussion: Power and Impedance.- The Magnitude of Acoustic Power.- Decibel Units for Acoustic Power.- Power, Pressure, and Hearing Loss.- Real and Imaginary Impedancec.- What Is Noise Control?.- What Is Passive Noise Control.- What is Active Noise Control?.- 4. Free Space Noise Control.- Passive Noise Control Approaches.- Control Control Approaches.- 5. Enclosed Space Noise Control.- Where Does the Sound Come From?.- How Does the Sound Get Out Again?.- How Does the Sound Field Arrange Itself?.- Passive Noise Control Approaches.- Active Noise Control Approaches.- 6. Control of Sound Propagation in Ducts.- Sound Fields in Ducts.- Modes in Ducts.- Impedance in Ducts.- Passive Noise Control Approaches.- Sidebranch Resonator.- Expansion Chamber.- Helmholtz Filter.- Dissipative Passive Control Techniques.- Active Noise Control Approaches.- Reference and Error Signal Quality.- Reference Sensor/Control Source Separation Distance.- Control Source Position in the Duct.- Duct Response Characteristics.- 7. Active Noise Controller Overview.- Some Important Facts.- Digital System Requirements.- Controller Output (Digital Control Filter) Requirements.- Adaptive Algorithm Requirements.- 8. Controller Fundamentals.- General Control System Outlines and Definitions.- Physical System Limitations.- Interfacing a Digital System.- Background.- Required Additions for Digital Control.- Overview of the Controller.- Controller Component 1: The Digital Filter.- What Is a Digital Filter?.- Specifying the "Appropriate" Digital Filter.- Specifying the Digital Filter Length.- Controller Component 2: The Adaptive Algorithm.- Background: Making Use of Adaptive Signal Processing.- Gradient Descent Algorithms.- Evaluating the Gradient.- The Convergence Coefficient.- Quantization Errors and Leakage.- Slowing Down the Algorithm to Improve Performance.- Controller Component 3: Cancellation Path Modeler.- Selecting the Sample Rate.- So What Is the Optimum Sample Rate?.

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