Annoyance of Audible Infrasound

Møller, Henrik

doi:10.1177/026309238700600101

Cited by 35 publications

(40 citation statements)

References 1 publication

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“…The results obtained in this study indicated that even a small change in sound pressure level above threshold could cause a relatively large change in the annoyance at lower frequencies. Similar results were obtained for frequencies of 31.5 Hz and below by Moller [6] and Adresen and Moller [7]. It was found in this study that a similar trend was observed at frequencies up to 80 Hz.…”

Section: Annoyance Of Pure Tonessupporting

confidence: 91%

“…This scale is referred to as Graphical Scale in this paper. Moller [6] used a graphical scale to measure annoyance of low frequency tones and concluded that the graphical scale was practicable for comparative measurements. The second scale was a pure tone at 63 Hz: the subjects were asked to adjust its intensity so that it was perceived as equally annoying as the sound under test.…”

Section: Methods Of Annoyance Measurementmentioning

confidence: 99%

“…There have been various studies to measure the annoyance of low frequency sounds [4,[6][7][8]. Moller [6] and Andresen and Moller [7] obtained equal annoyance contours of pure tones for frequencies at 4,8,16, 31.5 and 1000 Hz. They measured the annoyance of these pure tones starting at a sound pressure level of about 15 dB above average hearing threshold defined in ISO 389-7 [5] frequencies, too.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Annoyance of Low Frequency Tones and Objective Evaluation Methods

Subedi

Yamaguchi

Matsumoto

et al. 2005

Journal of Low Frequency Noise, Vibration and Active Control

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Annoyance of low frequency pure and combined tones was measured in a laboratory experiment. Three low frequency tones at frequencies of 31.5, 50 and 80 Hz at four sound pressure levels, from about 6 dB to 24 dB above average hearing threshold, were selected as pure tones. The combined tones were combinations of two tones: the four levels of 31.5, 50 and 80 Hz tones and a constant level 40 Hz tone. The results showed that the rate of increase in annoyance of pure tones with increase in the sound pressure level was higher at lower frequencies, as reported in previous studies. The results for the combined tones showed that the increase in the annoyance of the combined tone compared to the annoyance of pure tone was dependent on the level difference of the two tones and their frequency separation. These results were compared with the evaluation obtained from different objective methods. The three methods were Moore's loudness model, the low frequency A-weighting and the total energy summation used as objective evaluation methods. Among the methods, the low frequency A-weighting gave the best correlation.

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Section: Annoyance Of Pure Tonessupporting

confidence: 91%

Section: Methods Of Annoyance Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Annoyance of Low Frequency Tones and Objective Evaluation Methods

Subedi

Yamaguchi

Matsumoto

et al. 2005

Journal of Low Frequency Noise, Vibration and Active Control

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“…The stimuli were presented via Sennheiser HDA200 headphones connected to a PC with MATLAB 2,13 The selection of this duration was based on studies concluding that a stimulus length as short as 30 s can give comparable results to long stimuli. 15,16 Therefore, the standard duration of all stimuli for this study was selected to be equal to 30 s.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Effect of modulation depth, frequency, and intermittence on wind turbine noise annoyance

Ioannidou

Santurette

Jeong

2016

The Journal of the Acoustical Society of America

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Amplitude modulation (AM) may be an important factor for the perceived annoyance of wind turbine noise (WTN). Two AM types, typically referred to as "normal AM" (NAM) and "other AM" (OAM), characterize WTN AM, OAM corresponding to having intermittent periods with larger AM depth in lower frequency regions than NAM. The extent to which AM depth, frequency, and type affect WTN annoyance remains uncertain. Moreover, the temporal variations of WTN AM have often not been considered. Here, realistic stimuli accounting for such temporal variations were synthesized such that AM depth, frequency, and type, while determined from real on-site recordings, could be varied systematically. Listening tests with both original and synthesized stimuli showed that a reduction in mean AM depth across the spectrum led to a significant decrease in annoyance. When the spectrotemporal characteristics of the original far-field stimuli and the temporal AM variations were taken into account, the effect of AM frequency remained limited and the presence of intermittent OAM periods did not affect annoyance. These findings suggest that, at a given overall level, the AM depth of NAM periods is the most crucial AM parameter for WTN annoyance.

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“…These included neurologic (31,34,41,42,48,49) , cardiac (7,33) , vascular (17,35) and respiratory disorders (10,16,44,45,46) . Lesions of the parotid gland (47) and periodontium of LFN-exposed rats were recently reported (38) .…”

Section: Introductionmentioning

confidence: 99%

Noise-induced gastric lesions: a light and electron microscopy study of the rat gastric wall exposed to low frequency noise

Fonseca

Martins-dos-Santos

Oliveira

et al. 2012

Arq. Gastroenterol.

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-Context -Only a few studies evaluated the digestive alterations caused by low frequency noise (LFN) and most focused only on mucosal alterations. Objectives -To investigate the morphological injury of LFN-exposed gastric wall, beyond the epithelial layer. Methods -Wistar rats were exposed to low frequency noise (LFN), during increasing periods, 1 to 13 weeks. A control group was kept in silence. Gastric specimens were studied using: (i) light microscopy with hematoxylin-eosin and immunostaining for collagens; (ii) transmission electron microscopy; (iii) morphometry allowing statistical analysis. Results -Submucosa of all LFN-exposed animals exhibit increased thickness with fibrous proliferation. Transmission electron microscopy showed massive collagen deposition. Immunostaining identified collagen IV as responsible for the increased thickness. Morphometry allowed the demonstration of a significant difference of thickness between control and exposed groups. Vascular alterations included: i) intima proliferation and thickening, rupture of the internal elastic lamina, thrombotic changes; ii) thickening of the media; iii) after 9 weeks of LFN-exposure, we found new formed vessel presenting tortuous and twisted. There is a significant difference of arterial wall thickness between control and exposed groups. Conclusions -Deeper layers of gastric wall undergo alterations, including fibrosis of the submucosa caused by collagen IV deposition, an early marker of neoangiogenesis. Vascular alterations included thickening and thrombotic phenomena, but also images of newly formed vessels. This study suggests that, at least in the stomach, LFN-induced fibrosis could be linked with neoangiogenesis.

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Annoyance of Audible Infrasound

Cited by 35 publications

References 1 publication

Annoyance of Low Frequency Tones and Objective Evaluation Methods

Annoyance of Low Frequency Tones and Objective Evaluation Methods

Effect of modulation depth, frequency, and intermittence on wind turbine noise annoyance

Noise-induced gastric lesions: a light and electron microscopy study of the rat gastric wall exposed to low frequency noise

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