A new assessment method for low frequency noise annoyance is proposed. A new frequency weighting is introduced, and its robustness tested. Possible effects of impulsiveness and tonality are discussed. The method proposed explicitly includes correction factors for the former, while the latter is shown to be insignificant in this context. The method is cross-checked with existing methods based on frequency weightings, and its performance is objectively quantified using synthetic indicators.
PoulsenT. and MortensenF. R., Laboratory evaluation of annoyance of low frequency noise, Danish Environmental Protection Agency, WR n.1, 2002.
2.
International Standard IEC 61672–1 – Electroacoustics – Sound Level Meters – Part 1: Specifications, IEC, Geneve, Switzerland, 2002.
3.
International Standard ISO 7196 – Frequency-weighting characteristic for infrasound measurements, ISO, Geneve, Switzerland, 1995.
4.
WatanabeT. and YamadaS., Study on the perception of complex low frequency sounds, in: Proceedings of 9th International Meeting on Low Frequency Noise and Vibration, Aalborg (Denmark), May 17 – 19, 2000, pp 189–202
5.
LydolfM.MøllerH., Equal-loudness level contours for frequencies below 1 KHz, in Thesis/Dissertation by Morten Lydolf, University of Aalborg (Denmark), 1999.
6.
WatanabeT.MøllerH., Low frequency hearing thresholds in pressure field and in free field, Journal of Low Frequency Noise and Vibration, 1991, Vol.9, 106–115.
PedersenT. H., Impulsstoj, Objektiv målemetode for impulsers tydelighed og for tideling at impulstillæg, DELTA Arbejdsrapport fra Miljostyrelsen n. 1, 2001 (in Danish, with extended abstract in English); see also the more concise document Objective method for the measurement of prominence of impulsive sounds and for the adjustment of LAeq, DELTA publication AV1794/00, 2000.
9.
PedersenT. H., Objective method for assessing the audibility of tones in Noise Joint Nordic Method – Version 2, DELTA publication AV1952/99, 2000.
10.
Draft International Standard ISO/CD 1996–2 – Acoustics: Description measurement and assessment of environmental noise – Part 2: Determination of environmental noise levels, ISO, Geneve, Switzerland, 2001.