Undergraduate - UnitMEC4444 - Industrial noise and control

This unit entry is for students who completed this unit in 2014 only. For students planning to study the unit, please refer to the unit indexes in the the current edition of the Handbook. If you have any queries contact the managing faculty for your course or area of study.

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6 points, SCA Band 2, 0.125 EFTSL

Refer to the specific census and withdrawal dates for the semester(s) in which this unit is offered, or view unit timetables.

Level	Undergraduate
Faculty	Faculty of Engineering
Organisational Unit	Department of Mechanical and Aerospace Engineering
Offered	Clayton Second semester 2014 (Day) Malaysia Second semester 2014 (Day)
Coordinator(s)	Prof W K Chiu (Clayton); Dr Tan Boon Thong (Malaysia)

Synopsis

Fundamentals of sound and sound propagation, wave equation, Helmholtz equation, absorption, impedance and intensity, silencers. Transmission from one medium to another, applications and optimisation. Transmission through walls, mass law, coincidence and resonance. Sound transmission in the atmosphere, inverse square law, excess attenuation. Radiation of sound, directivity. Sound in enclosed spaces. Noise sources, noise reduction techniques, noise legislation and regulation, acceptable noise levels, hearing conservation, measurement and analysis of noise, design for low noise.

Outcomes

On completion of this unit, should are expected to:

calculate basic noise measurement quantities (sound pressure levels, sound power levels and sound intensity level);
model the propagation of sound in a duct and in free-space;
analyse the fundamentals of reactive noise attenuation devices;
explain the concept of transmission loss:
explain the concepts of direct and reverberant noise field in a close-environment;
combine the concepts of noise source, noise path and noise measurement to examine the impact of a given noise source on its environment.