NOISE-INDUCED BIAS IN DECIBEL DETERMINATIONS

Authors
CLARKE D
Citation
D. Clarke, NOISE-INDUCED BIAS IN DECIBEL DETERMINATIONS, Measurement science & technology, 7(6), 1996, pp. 963-964
Citations number
1
Categorie Soggetti
Instument & Instrumentation",Engineering
Journal title
Measurement science & technology → ACNP
ISSN journal
09570233
Volume
7
Issue
6
Year of publication
1996
Pages
963 - 964
Database
ISI
SICI code
0957-0233(1996)7:6<963:NBIDD>2.0.ZU;2-3
Abstract
It is demonstrated that measurements of power levels expressed in unit s of decibels are prone to noise-induced bias as a result of the logar ithmic nature of the decibel scale. Estimates of the effect of the bia s on the mean of a repeated set of values and on the mode value are gi ven, indicating that allowance for noise-induced bias is important in the reporting of measurements made with low values of signal-to-noise ratio of the order < 10.