Active Noise Control Primer
Active noise control - the reduction of noise by generating an acoustic signal that actively interferes with the noise - has become an active area of basic research and engineering applications. The aim of this book is to present all of the basic knowledge one needs for assessing how useful active n...
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| Format: | eBook |
| Language: | English |
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New York, NY
Springer New York
2000, 2000
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| Edition: | 1st ed. 2000 |
| Series: | Modern Acoustics and Signal Processing
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| Subjects: | |
| Online Access: | |
| Collection: | Springer Book Archives -2004 - Collection details see MPG.ReNa |
Table of Contents:
- Controller Component 1: The Digital Filter
- Controller Component 2: The Adaptive Algorithm
- Controller Component 3: Cancellation Path Modeler
- 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
- 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
- Interfacinga Digital System
- Background
- Required Additions for Digital Control
- Overview of the Controller