Danielle Moreau

This book highlights the importance of sound produced by fluid flow or flow-induced noise. Noise created by unsteady flow creates high levels of environmental noise pollution, a known public health problem, and can compromise the acoustic qualities of marine vessels. There is a seemingly ever-growing list of modern technology that created flow-induced noise which includes aircraft, wind turbines, submarines, drones, high-speed rail, and cooling fans. More scientists and engineers are required to incorporate the effects of flow-induced noise in their work. This book also provides a comprehensive introduction to the theory underpinning the understanding of flow-induced noise.

This book highlights the importance of sound produced by fluid flow or flow-induced noise. Noise created by unsteady flow creates high levels of environmental noise pollution, a known public health problem, and can compromise the acoustic qualities of marine vessels. There is a seemingly ever-growing list of modern technology that created flow-induced noise which includes aircraft, wind turbines, submarines, drones, high-speed rail, and cooling fans. More scientists and engineers are required to incorporate the effects of flow-induced noise in their work. This book also provides a comprehensive introduction to the theory underpinning the understanding of flow-induced noise.

Since the publication of the first edition, considerable progress has been made in the development and application of active noise control (ANC) systems, particularly in the propeller aircraft and automotive industries. Treating the active control of both sound and vibration in a unified way, this second edition of Active Control of Noise and Vibration continues to combine coverage of fundamental principles with the most recent theoretical and practical developments. What’s New in This EditionRevised, expanded, and updated information in every chapterAdvances in feedforward control algorithms, DSP hardware, and applicationsPractical application examples of active control of noise propagating in ductsThe use of a sound intensity cost function, model reference control, sensing radiation modes, modal filtering, and a comparison of the effectiveness of various sensing strategiesNew material on feedback control of sound transmission into enclosed spacesNew material on model uncertainty, experimental determination of the system model, optimization of the truncated model, collocated actuators and sensors, biologically inspired control, and a discussion of centralised versus de-centralised controlA completely revised chapter on control system implementationNew material on parametric array loudspeakers, turbulence filtering, and virtual sensingMore material on smart structures, electrorheological fluids, and magnetorheological fluidsIntegrating the related disciplines of active noise control and active vibration control, this comprehensive two-volume set explains how to design and implement successful active control systems in practice. It also details the pitfalls one must avoid to ensure a reliable and stable system.

Since the publication of the first edition, considerable progress has been made in the development and application of active noise control (ANC) systems, particularly in the propeller aircraft and automotive industries. Treating the active control of both sound and vibration in a unified way, this second edition of Active Control of Noise and Vibration continues to combine coverage of fundamental principles with the most recent theoretical and practical developments. What’s New in This EditionRevised, expanded, and updated information in every chapterAdvances in feedforward control algorithms, DSP hardware, and applicationsPractical application examples of active control of noise propagating in ductsThe use of a sound intensity cost function, model reference control, sensing radiation modes, modal filtering, and a comparison of the effectiveness of various sensing strategiesNew material on feedback control of sound transmission into enclosed spacesNew material on model uncertainty, experimental determination of the system model, optimization of the truncated model, collocated actuators and sensors, biologically inspired control, and a discussion of centralised versus de-centralised controlA completely revised chapter on control system implementationNew material on parametric array loudspeakers, turbulence filtering, and virtual sensingMore material on smart structures, electrorheological fluids, and magnetorheological fluidsIntegrating the related disciplines of active noise control and active vibration control, this comprehensive two-volume set explains how to design and implement successful active control systems in practice. It also details the pitfalls one must avoid to ensure a reliable and stable system.

This second edition covers recent theoretical and practical developments, while at the same time devoting considerable space to fundamental principles that will not become outdated with time. It begins with an updated overview and includes new information included reflects the advances that have been made in algorithms, DSP, hardware, and applications.