Home Journal
E-mail Print
Acoustics Australia Logo (3032 bytes)

Vol 34 No 2

CONTENTS

August 2006


ARTICLES

Active Noise Control: A Review in the Context of the ?Cube of Difficulty?
M. R. F. Kidner
PDF Full Paper

Active Noise Control at UWA ? A Brief Review of the Acoustical Understanding and Practical Application of ANC Systems
Jie Pan and Roshun Paurobally
PDF Full Paper

Sensors and Actuators for Active Noise Control Systems
Cohn H Hansen
PDF Full Paper

A Review of Active Control Applied to Plates and Cylinders
Nicole Kessissoglou
PDF Full Paper

Future Meetings
News
FASTS
Standards Australia
New Products
New Members
Book Reviews
Diary
Acoustics Australia Information
Australian Acoustical Society Information
Advertisers Index


ACTIVE NOISE CONTROL: A REVIEW IN THE CONTEXT OF THE ?CUBE OF DIFFICULTY?

M. R. F. Kidner,
Acoustics Vibration & Control Group
Dept. Mechanical Engineering
University of Adelaide
Adelaide SA 5006 Australia

Vol. 34, No. 2 pp 65 - 69 (2006)
ABSTRACT: Over the past twenty years active control of noise has developed into a mature research field and into a product for some technical companies. This paper reviews the current state of the art in both the research and development fields using the context of a cube of difflculty. The cube illustrates how the three physical quantities: frequency bandwidth, spatial extent and signal coherence, contribute to the difficulty of achieving control performance. The literature is reviewed and placed within the cube to reveal patterns in research and areas of further work.

ACTIVE NOISE CONTROL AT UWA ? A Brief Review of the Acoustical Understanding and Practical Application of ANC Systems

Jie Pan and Roshun Paurobally
Center for Acoustics,
Dynamics and Vibration School of Mechanical Engineering,
The University of Western Australia,
35 Stirling Highway, Crawley, WA 6009 Australia

Vol. 34, No. 2 pp 71 - 78 (2006)
ABSTRACT: The design, analysis and realization of Active Noise Control (ANC) systems have been challenges to acoustical and control communities over the last two decades. It is largely due to the effort in the acoustical community and to advances in digital signal processing technologies that significant progress has been made in this field. As part of this international quest in advancing ANC technology, researchers at the University of Western Australia (UWA) have focused on (1) applying an understanding of acoustical systems to the design of ANC systems and (2) the development of practical ANC systems for the Western Australian mining, shipbuilding and building industries. This paper presents a brief review of the contribution to these two areas by the UWA team including the results obtained from several practical applications.

SENSORS AND ACTUATORS FOR ACTIVE NOISE CONTROL SYSTEMS

Cohn H Hansen
Acoustics, Vibration and Control Group
School of Mechanical Engineering
University of Adelaide SA 5005

Vol. 34, No. 2 pp 79 - 84 (2006)
ABSTRACT: Successful implementation of an active noise and vibration control system requires an effective control system and a good understanding of the physics of the problem to be controlled. However, there can be no successful implementation without appropriate transducers for transforming acoustic signals into voltages for the electronic control system and for transforming voltages output from the control system into sound. Although a considerable amount of research has been devoted to control algorithms and optimal physical arrangements for sensors and control actuators, little has been written about the requirements for the sensors and actuators themselves. Here a number of practical actuator and sensor implementations are discussed for both fully active and semi active noise control systems.

A REVIEW OF ACTIVE CONTROL APPLIED TO PLATES AND CYLINDERS

Nicole Kessissoglou
School of Mechanical and Manufacturing Engineering
The University of New South Wales, Sydney, 2052

Vol. 34, No. 2 pp 85 - 92 (2006)
ABSTRACT: This paper presents adaptive feedforward active control applied to simple structures comprised of beam, plate and cylindrical elements. For each system under consideration, by initially obtaining a good understanding of the physics of the structural and acoustic responses, the active control application can be tuned to improve the control performance. In particular, the use of active structural acoustic control to attenuate the structurally radiated sound fields is investigated.

 

Newsflash

PROPOSED INTERNATIONAL YEAR OF SOUND 2019

Let's make 2019 the International Year of Sound!

Click here to see draft prospectus. Suggestions for major activities that would be truly international to strengthen the application are welcomed.

 

ACOUSTICS 2017

Perth, Western Australia 19-22 November 2017