✦ LIBER ✦

Bandwidth limitation effects on low-frequency impulse noise prediction and assessment

✍ Scribed by G. Kerry; R.D. Ford; D. James

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 686 KB
Volume: 47
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(95)00039-c

No coin nor oath required. For personal study only.

✦ Synopsis

Methods for assessing noise from high energy wideband impulsive sources currently use either linear peak descriptors or ones based on frequency weighted r.m.s. values. Signtjicant errors can be introduced if such assessments are made using data obtained from intruments with limited bandwidth or with ill-definedfilter or cut-oflchacteristics.

Of particular importance are the errors introduced when extrapolating empirical equations for the prediction of impulse noise levels to dtflerent size sources and diflerent distances. This note considers the effect of using band limited data when making predictions over hard and soft surfaces and concludes that such predictions will be more reliable tf full frequency waveforms are used from source to final location.

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