Annoyance of Low Frequency Tones and Objective Evaluation Methods

Subedi, Jishnu; Yamaguchi, Hiroki; Matsumoto, Yasunao; M, Ishihara

doi:10.1260/0263092054531000

Cited by 10 publications

(8 citation statements)

References 14 publications

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“…Recently, Subedi et al, [40] measured annoyance of low frequency pure and combined tones in a laboratory experiment. They compared these results (median values) with the evaluation obtained from three objective methods, namely a method based on Moore's loudness model, the total energy summation model (in this study referred to as the total SPL), and the low frequency A-weighting.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of annoyance from low frequency noise under laboratory conditions

Pawlaczyk-Łuszczyńska

Dudarewicz

Szymczak

et al. 2010

Noise Health

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The aim of the study was to investigate the annoyance of low frequency noise (LFN) at levels normally prevailing at workplaces in control rooms and office-like areas. Two different laboratory experiments were carried out. The first experiment included 55 young volunteers and the second one comprised 70 older volunteers, categorized in terms of sensitivity to noise. The subjects listened to noise samples with different spectra, including LFNs at sound pressure level (SPL) of 45-67 dBA, and evaluated annoyance using a 100-score graphical rating scale. The subjective ratings of annoyance were compared to different noise metrics. In both the experiments, there were no differences in annoyance assessments between females and males. A significant influence of individual sensitivity to noise on annoyance rating was observed for some LFNs. Annoyance of LFN was not rated higher than annoyance from broadband noises without or with less prominent low frequencies at similar A-weighted SPLs. In both the experiments, median annoyance rating of LFN highly correlated with A-weighted SPL (L(Aeq,T)), low frequency A-weighted SPL (L(LFAeq,T)) and C-weighted SPL (L(Ceq,T)). However, it is only the two latter noise metrics (i.e. L(LFAeq,T) and L(Ceq,T)) which seem to be reliable predictors of annoyance exclusively from LFN. The young and older participants assessed similar annoyance from LFN at similar L(LFAeq,T) or L(Ceq,T) levels. Generally, over half of the subjects were predicted to be highly annoyed by LFN at the low frequency A-weighted SPL or C-weighted SPL above 62 and 83 dB, respectively.

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Section: Discussionmentioning

confidence: 99%

Evaluation of annoyance from low frequency noise under laboratory conditions

Pawlaczyk-Łuszczyńska

Dudarewicz

Szymczak

et al. 2010

Noise Health

View full text Add to dashboard Cite

show abstract

“…Recently, Subedi et al 36 measured annoyance of low frequency pure and combined tones in a laboratory experiment. They compared these results (median values) with the evaluation obtained from objective methods based on Moore's loudness model, the total energy summation (in this study referred to as the total sound pressure level) and the low frequency A-weighting, and found that the latter one yielded the best correlation.…”

Section: Discussionmentioning

confidence: 99%

Annoyance Related to Low Frequency Noise in Subjective Assessment of Workers

Pawlaczyk-Łuszczyńska

Dudarewicz

Waszkowska

et al. 2009

Journal of Low Frequency Noise, Vibration and Active Control

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The aim of this study was to assess annoyance related to low frequency noise (LFN) in employees of the control rooms and office-like areas. Subjects were 276 workers, aged 26–62 years, exposed to noise at A-weighted sound pressure level (SPL) of 41–66 dB. They were asked to assess noise annoyance at their workplace using a 100 point graphical scale. The subjective ratings were compared with various noise metrics and objective evaluations based on proposed LFN exposure criteria for occupational settings. There was a difference in annoyance assessment related to noise with and without (or with less prominent) low frequency content. Low frequency noise was rated as more annoying even though it was at lower dBA levels. Among the noise metrics, the low frequency A-weighted SPL yielded the highest correlation with subjective evaluations of LFN. There was also a quite good agreement between individual annoyance ratings and limit excesses corresponding to preliminary Swedish and Polish exposure criteria.

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“…At low and particularly infrasonic frequencies, the loudness increases more steeply above the hearing threshold than at higher frequencies, [2][3][4][5] and a sound moderately above threshold may be perceived not only loud but also annoying. [6][7][8][9] Since there is a natural spread in hearing thresholds, a sound that is inaudible or soft to some people may be loud and annoying to others. Low-frequency noise above the hearing threshold may also affect task performance 10 and cause sleep disturbances.…”

Section: A Low-frequency Sound and Infrasoundmentioning

confidence: 99%

Low-frequency noise from large wind turbines

Møller

Pedersen

2011

The Journal of the Acoustical Society of America

163

117

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As wind turbines get larger, worries have emerged that the turbine noise would move down in frequency and that the low-frequency noise would cause annoyance for the neighbors. The noise emission from 48 wind turbines with nominal electric power up to 3.6 MW is analyzed and discussed. The relative amount of low-frequency noise is higher for large turbines (2.3-3.6 MW) than for small turbines (≤ 2 MW), and the difference is statistically significant. The difference can also be expressed as a downward shift of the spectrum of approximately one-third of an octave. A further shift of similar size is suggested for future turbines in the 10-MW range. Due to the air absorption, the higher low-frequency content becomes even more pronounced, when sound pressure levels in relevant neighbor distances are considered. Even when A-weighted levels are considered, a substantial part of the noise is at low frequencies, and for several of the investigated large turbines, the one-third-octave band with the highest level is at or below 250 Hz. It is thus beyond any doubt that the low-frequency part of the spectrum plays an important role in the noise at the neighbors.

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Annoyance of Low Frequency Tones and Objective Evaluation Methods

Cited by 10 publications

References 14 publications

Evaluation of annoyance from low frequency noise under laboratory conditions

Evaluation of annoyance from low frequency noise under laboratory conditions

Annoyance Related to Low Frequency Noise in Subjective Assessment of Workers

Low-frequency noise from large wind turbines

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