The basic data of "Reference values for mental and physical discomfort complaints" about low frequency noise : Psychophysical experiments on the hearing thresholds and the subjective evaluations of low frequency sound

In allusion to the characteristic that transformer noise is mainly low-frequency noise, firstly the sound absorber is studied and analyzed on aspect of materials, sound absorption structure cavity thickness and punching rate etc in standing wave tube laboratory, secondly transformer substation low-frequency sound absorber is presented, and finally sound absorption properties of absorber is verified through random incidence Test. The analyses and study indicates that: compared with thin plate resonance absorber and micropunching sound absorber, the sound absorption band width of transformer substation low-frequency sound absorber has been improved under unchanged sound absorption effect and transformer low-frequency noise may be effectively absorbed.

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Case Studies of Field Measurements of Low Frequency Sound and Complaints by a Non Profit Organization for Supporting Noise, Vibration and Low Frequency Noise Complainants in Japan

Journal of Low Frequency Noise Vibration and Active Control ◽

10.1260/0263-0923.31.4.257 ◽

2012 ◽

Vol 31 (4) ◽

pp. 257-266 ◽

Cited By ~ 2

Author(s):

Shinji Yamada ◽

Yukio Inukai ◽

Kimiaki Takagi ◽

Tsutae Sebayashi ◽

Shota Koyama ◽

...

Keyword(s):

Case Studies ◽

Low Frequency ◽

Field Measurements ◽

Frequency Noise ◽

Low Frequency Noise ◽

Non Profit ◽

Frequency Sound ◽

Noise Vibration

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A Questionnaire Survey of Complaints of Infrasound and Low-Frequency Noise

Journal of Low Frequency Noise Vibration and Active Control ◽

10.1260/026309202761019507 ◽

2002 ◽

Vol 21 (2) ◽

pp. 53-63 ◽

Cited By ~ 28

Author(s):

Henrik Møller ◽

Morten Lydolf

Keyword(s):

Questionnaire Survey ◽

Low Frequency ◽

Frequency Noise ◽

Low Frequency Noise ◽

Secondary Effects ◽

Verbal Reports ◽

The Troubles ◽

Hearing Thresholds ◽

External Objects ◽

Mere Presence

A survey of complaints about infrasound and low frequency noise has been carried out. 198 persons reported their troubles in a questionnaire. Their verbal reports often described the sound as deep and humming or rumbling, as if coming from the distant idling engine of a truck or pump. Nearly all respondent's reported a sensory perception of a sound. In general they reported that they perceived the sound with their ears, but many mention also the perception of vibration, either in their body or in external objects. The sound disturbs and irritates during most activities, and many consider its mere presence as a torment to them. Many of the respondents reported secondary effects, such as insomnia, headache and palpitation, which they associtated with the sound mainly because it occured at the same place as the sound. In a majority of the cases, only one or a few persons can hear the sound, but there are also examples, where it is claimed to be audible to everybody. Typically, measurements have shown that existing limits (and hearing thresholds) are not exceeded. The investigation leaves the key question: Are the troubles induced by an external sound or not, and if they are, which frequencies and levels are involved? The feasibility of a study of this is supported by the results.

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Low Frequency Noise Considerations for Combustion Turbine Projects

Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration ◽

10.1115/97-gt-140 ◽

1997 ◽

Author(s):

Lisa A. Beeson ◽

George A. Schott

Keyword(s):

Noise Control ◽

Low Frequency ◽

Frequency Noise ◽

Low Frequency Noise ◽

Pressure Pulsations ◽

Relative Difficulty ◽

Low Frequencies ◽

Sound Energy ◽

Frequency Sound ◽

Human Ear

Combustion turbine projects have become a popular choice for providing a clean and efficient source of electricity. However, since combustion turbines generally produce low frequency sound energy, special siting considerations should be evaluated to minimize the potential for impacts on sensitive receptors, such as residences, churches, hospitals, and schools. For successful siting of combustion turbine projects near sensitive receptors, it is necessary to incorporate noise control features into plant designs to reduce not only audible noise but also noise at frequencies which are even lower than the human ear can perceive. These extremely low frequencies can rattle walls and windows, causing pressure pulsations which may be perceived by some people, or vibration of small objects inside houses and other structures. Even “quiet” plants which include extensive noise control features may still result in perceptible low frequency noise due to the relative difficulty of attenuating low frequency sound energy. Noise attenuation options are discussed, including active, passive, and reactive technologies, along with the impacts associated with each type of design. Guidelines for siting combustion turbine power generation facilities near sensitive receptors are presented, to enable development of projects which not only meet applicable noise requirements, but also reduce the potential for community complaints.

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Psychological Analysis of Complainants on Noise/Low Frequency Noise and the Relation between Psychological Response and Brain Structure

Journal of Low Frequency Noise Vibration and Active Control ◽

10.1260/0263092054037739 ◽

2005 ◽

Vol 24 (1) ◽

pp. 43-48 ◽

Cited By ~ 1

Author(s):

Toshiya Kitamura ◽

Masaki Hasebe ◽

Shinji Yamada

Keyword(s):

Good Life ◽

Low Frequency ◽

Present Knowledge ◽

Frequency Noise ◽

Low Frequency Noise ◽

Personality Inventories ◽

Psychological Analysis ◽

Hearing Thresholds ◽

The Brain ◽

Different Parts

In Japan there are two kinds of low frequency noise (LFN) problems. One is LFN that can be heard directly in a house and causes discomfort, and the other is LFN that rattles windows or doors and causes annoyance. Authors met about 100 complainants on noise or low frequency noise. Hearing thresholds of some complainants were measured and Yatabe-Guilford personality inventories of some complainants were carried out. We observed many complainants and tried to analyze the complainants' mind by the psychoanalytical method. Their minds have three layers. The 1st layer is the basic desire for survival and good life etc. The 2nd layer is personality or consideration obtained by experience and the 3rd layer concerns movement, speech or action etc. Many complainants lack the 2nd layer on noise/low frequency noise and their movements and reactions on noise/LFN appear directly from the 1st layer of basic desire without consideration of the 2nd layer. The findings of the three layers are discussed in relation to present knowledge on how the different parts of the brain are organized.

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