A Study on the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-level Low-frequency Pure Tones

Takahashi, Yukio; Kanada, Kazuo; Yonekawa, Yoshiharu; Harada, Noriaki

doi:10.2486/indhealth.43.580

Cited by 13 publications

(18 citation statements)

References 20 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although the levels of these vibrations ('noiseinduced vibrations') are not especially high, our previous study, in which lowfrequency pure tones were used as noise stimuli, suggested that noise-induced vibrations measured on the body surface at the chest or abdomen are closely related to the perception of vibration in the corresponding part of the body [19]. Taking the results by Inukai et al into account, it was deduced that the noise-induced vibrations primarily contribute to the vibratory sensation, and, through the vibratory sensation or together with other factors, secondarily contribute to inducing unpleasantness in persons exposed to high-level low-frequency noise [20].…”

Section: Introductionmentioning

confidence: 99%

A Consideration of the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-Level, Complex Low-Frequency Noise

Takahashi

2006

Journal of Low Frequency Noise, Vibration and Active Control

Self Cite

View full text Add to dashboard Cite

To investigate the relationship between subjective unpleasantness and body surface vibrations induced by high-level, complex low-frequency noise, we carried out two expetiments. Body surface vibrations were measured at the right and left anterior chest and the right and left anterior abdomen of male subjects. Subjective unpleasantness was rated on a scale of 1 to 5, and correlated with the vibration acceleration levels (VALs) of the vibrations measured on the body surface. As a result, it was found that the ratings of unpleasantness did, on the whole, significantly correlate with the VALs. In addition, we estimated the frequency-weightings for the VAL to optimize the correlation with the rating of unpleasantness. Based on a reasonable hypothesis, the frequency-weightings estimated in the present study were considered to be consistent with those estimated in our previous study using low-frequency pure tones. The present results support the idea that not only the loudness of a noise, but also the vibrations induced by that noise, contribute to the subjective unpleasantness experienced by persons exposed to high-level low-frequency noise. The effect of vibration should be taken into consideration in evaluating high-level low-frequency noise.

show abstract

Section: Introductionmentioning

confidence: 99%

A Consideration of the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-Level, Complex Low-Frequency Noise

Takahashi

2006

Journal of Low Frequency Noise, Vibration and Active Control

Self Cite

View full text Add to dashboard Cite

show abstract

“…Energy propagating in the air takes the form of acoustic waves that are divided by frequency into ultrasound, audible sounds, and infrasound [2]. Noise is an undesirable, unpleasant, cumbersome, oppressive or harmful sound of excessive intensity affecting the organ of hearing, the other senses and other parts of the body or the whole body [3][4][5][6][7]. Proper development of the acoustic environment is based on the formation of acoustic conditions so that they are optimal from the point of view of health and human activities.…”

Section: Introductionmentioning

confidence: 99%

The Use of Artificial Intelligence as a Tool Supporting Sustainable Development Local Policy

et al. 2019

View full text Add to dashboard Cite

This paper addresses the problem of noise in spa protection areas. Its aim is to determine the delimitation of the areas that exceed a permissible noise level around the sanatorium on the example of a health resort in Inowrocław. The determination of the exceedance of permissible noise levels allows us to develop directly effective local policy tools to be included in planning documents. In order to reduce noise infiltration, it is important to define environmental priorities. Taking into account their impact on the health of users in the protection area, environmental priorities enable us to introduce additional elements to street architecture. In order to properly manage space, in accordance with the idea of sustainable development, zones of environmental sensitivity-and their socio-environmental vulnerability-have been designated for assessing damage (exceeding permissible noise in health facilities) and defining methods of building resilience (proper management). This has provided the basis for a natural balance optimized for the people living in these areas. To achieve the goal above, non-linear support vector machine (SVM) networks were used. This technique allows us to classify the linearly inseparable data and to determine the optimal separation margin. The boundaries of the areas which exceeded permissible noise levels (separation margin) were estimated on the basis of noise pollution maps, created by means of the SVM technique. Thus, the study results in establishing buffer zones where it is possible to use varied land utilization in terms of form and function, as described in the planning documents. Such an activity would limit the spread of noise.Sustainability 2019, 11, 4199 2 of 17 it is important to properly manage and recognize social, environmental and health vulnerabilities. "Noise sensitivity" is defined as an individual and increased probability of perceiving sounds as unpleasant [8][9][10][11]. Moreover, getting used to excessive noise levels causes indifference, which is caused by exposure to a hazardous situation [12][13][14][15][16].Noise can be characterized by its source (e.g., anthropogenic or natural causes) or by specific physical values, such as power, intensity, frequency or duration. It should be noted that its relevant parameters refer not only to strictly objective values considered to be unpleasant or harmful but also, to the same extent, to the places where common sounds will cause unwanted or disturbing effects [17][18][19]. Organized urban spaces are treated like resources directly used by local residents. The conditions of these spaces decide also on the possibilities for creating a proper base for planners who, to a greater or lesser degree, introduce quantitative and qualitative changes in the area [20,21].It is important then, to analyze the acoustic situation. The determination of physical parameters such as density, open spaces, their shape, the greenery and the location of the buildings has a significant effect on the noise spread in the environment [18,22]. Maps are a...

show abstract

“…Além disso, níveis elevados de pressão sonora causados por uma fonte geradora de ruído de baixa frequência afetam toda a superfície do corpo humano [4]. Os experimentos [4], [5] e [6] realizados por diversos pesquisadores permitem concluir que o corpo humano reage de forma mecanicamente linear a estímulos sonoros levados pelo ar [4].…”

Section: Introductionunclassified

“…A existência de uma relação subjetiva entre altos níveis de ruído de baixa frequência e sensibilidade ao ruído ainda motiva pesquisadores [5], [6] e [7]. Por se tratar de um efeito subjetivo, torna-se de difícil a sua mensuração.…”

Section: Introductionunclassified

Análise de Ruído Sonoro em Ambiente Industrial: Uma Nova Abordagem

Martins¹,

Alencar²

2013

Anais Do Encontro Anual Do Iecom Em Comunicações, Redes E Criptografia - 2013

View full text Add to dashboard Cite

Resumo-Este artigo apresenta uma análise preliminar do ruído presente em uma planta de uma indústria nacional de grande porte. Os equipamentos utilizados em um ambiente industrial geram poluição sonora e podem afetar a saúde do trabalhador. A legislação atual contempla apenas a exposição a altos níveis de ruído, independentemente da sua característica espectral. O controle do nível de potência para ruídos com componentes espectrais com alto nível de potência em baixa frequência, como encontrado na fábrica avaliada neste trabalho, não é regulamentado.Palavras-Chave-Ruído sonoro, ruido de baixa frequência, ambiente industrial, saúde laboral.Abstract-This paper presents a preliminary analysis of the noise present in a plant of a large national industry. In an industrial environment some machines generate noise and can affect the health of the worker. The current legislation only deal with exposure to high noise levels, regardless of its spectral characteristic. The control of lowpass noise power, as found in the factory analysed in this paper, is not regulated.Keywords-Audible noise, low noise frequency, factory enviroment, occupational health. I. INTRODUÇÃOO ruído acústico pode ser descrito como um som resultante de vibrações não periódicas do ar (comportando-se como um sinal aleatório) ou como a combinação de diversos sons inteligíveis, com intensidades iguais ou diferentes, cujo resultado torna-se ininteligível ao ouvido humano. Os equipamentos utilizados em um ambiente industrial a exemplo de motores, ventiladores, transformadores e compressores geram poluição sonora que pode causar severos efeitos nocivos na saúde do trabalhador.Os equipamentos presentes em um ambiente industrial, como os citados no parágrafo anterior geram ruído cuja potência se concentra em baixas frequências (20 Hz a 500 Hz), o chamado Low Frequency Noise (LFN). Considerando uma fonte geradora de ruído cuja potência se concentra nas baixas frequências, este ruído se espalha por um ambiente uniformemente e envolve o trabalhador de tal maneira que contribui decisivamente para o aumento da poluição sonora.A sensibilidade do ouvido humano não é uniforme. Ele percebe melhor as baixas frequências do que as altas. Para melhor representar a resposta auditiva humana as diferentes frequências captadas foram desenvolvidas as ponderações para enfatizá-las. Atualmente, a IEC 61672:2003 (atualização da IEC 60804:1985 A existência de uma relação subjetiva entre altos níveis de ruído de baixa frequência e sensibilidade ao ruído ainda motiva pesquisadores [5], [6] e [7]. Por se tratar de um efeito subjetivo, torna-se de difícil a sua mensuração. Entretanto alguns fatores demonstram ser mais preponderantes que outros. Idade, gênero e introversão não influenciam a sensibilidade ao ruído, diferentemente da capacidade de se aborrecer com um estímulo sonoro [7].Além do aborrecimento, podem ocorrer também [2][9]: estresse, distúrbio de sono, cefaleias, dificuldade de concentração, irritabilidade, fadiga, tontura ou vertigem, zumbido, ansiedade, doenças cardíaca...

show abstract

A Study on the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-level Low-frequency Pure Tones

Cited by 13 publications

References 20 publications

A Consideration of the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-Level, Complex Low-Frequency Noise

A Consideration of the Relationship between Subjective Unpleasantness and Body Surface Vibrations Induced by High-Level, Complex Low-Frequency Noise

The Use of Artificial Intelligence as a Tool Supporting Sustainable Development Local Policy

Análise de Ruído Sonoro em Ambiente Industrial: Uma Nova Abordagem

Contact Info

Product

Resources

About