Book contents
- Duct Acoustics
- Duct Acoustics
- Copyright page
- Dedication
- Contents
- Preface
- 1 Some Preliminaries
- 2 Introduction to Acoustic Block Diagrams
- 3 Transmission of Low-Frequency Sound Waves in Ducts
- 4 Transmission of One-Dimensional Waves in Coupled Ducts
- 5 Resonators, Expansion Chambers and Silencers
- 6 Multi-Modal Sound Propagation in Ducts
- 7 Transmission of Wave Modes in Coupled Ducts
- 8 Effects of Viscosity and Thermal Conductivity
- 9 Reflection and Radiation at Open Duct Terminations
- 10 Modeling of Ducted Acoustic Sources
- 11 Radiated Sound Pressure Prediction
- 12 Measurement Methods
- 13 System Search and Optimization
- Book part
- Index
- References
4 - Transmission of One-Dimensional Waves in Coupled Ducts
Published online by Cambridge University Press: 11 May 2021
Book contents
- Duct Acoustics
- Duct Acoustics
- Copyright page
- Dedication
- Contents
- Preface
- 1 Some Preliminaries
- 2 Introduction to Acoustic Block Diagrams
- 3 Transmission of Low-Frequency Sound Waves in Ducts
- 4 Transmission of One-Dimensional Waves in Coupled Ducts
- 5 Resonators, Expansion Chambers and Silencers
- 6 Multi-Modal Sound Propagation in Ducts
- 7 Transmission of Wave Modes in Coupled Ducts
- 8 Effects of Viscosity and Thermal Conductivity
- 9 Reflection and Radiation at Open Duct Terminations
- 10 Modeling of Ducted Acoustic Sources
- 11 Radiated Sound Pressure Prediction
- 12 Measurement Methods
- 13 System Search and Optimization
- Book part
- Index
- References
Summary
Some coupled-duct configurations occur recurrently in practical systems. In view of the conditions of continuity and compatibility of the acoustic fields, ducts may or may not be connected as individual units. In this chapter we present one-dimensional intermediate acoustic models for basic coupling configurations such as area changes and junctions, and continuous and discrete acoustic models for packs of coupled perforated ducts. These are multi-port elements and they can be connected at their ports to the one-dimensional duct elements given in Chapter 3.
- Type
- Chapter
- Information
- Duct AcousticsFundamentals and Applications to Mufflers and Silencers, pp. 125 - 172Publisher: Cambridge University PressPrint publication year: 2021
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