Ecoaccess Guideline for the Assessment of Low Frequency Noise

Author: Roberts, Cedric | Australia, Noise, Regulations

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Abstract: As a result of the escalation in low frequency noise sources appearing in new industrial development and the incidence of low frequency noise complaints experienced by residents in Queensland, a low frequency noise guideline has been developed by the Environmental Protection Agency. The Guideline is applicable to low frequency noise emitted from industrial premises, commercial premises and mining operations (not blasting), and is intended for planning purposes as well as for the evaluation of existing problems. The intent of the established criteria is to accurately assess annoyance and discomfort to persons at noise sensitive premises caused by low frequency noise with a frequency range from 10 Hz to 200 Hz. The technical paper will describe the main elements of this guideline including: use of the G-weighting function to determine annoyance due to infrasound in the frequency range from 1 Hz to 20Hz and low frequency noise criterion adopted for initial screening inside home environments in terms of Linear, A-weighted and one-third octave band sound pressure levels in the range 20 to 200 Hz. Initially auditory perception is established by comparing one-third octave band frequency sound with the ISO median hearing threshold levels (HTLs) for the best 10% of the aged population (55-60 years old) followed by separate noise criteria applied to establish annoyance from tonal and non-tonal noise. Two examples of the application of the guideline to infrasonic noise and non-tonal noise from industrial equipment are given in the paper.

Cedric Roberts
Environmental Operations, Integrated Assessment, Queensland Environmental Protection Agency
160 Ann Street, Brisbane, Queensland, Australia 4002

Proceedings of Acoustics 2004, 3-5 November 2004, Gold Coast, Australia

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