Shigenori Yokoshima

Indoor discomfort from ground transportation traffic vibration and noise—Comparison between Vietnamese and Japanese young participants

Nguyễn Thanh Tùng, Yasunao Matsumoto, Shigenori Yokoshima, Takashi Morihara et autres

This research investigated discomfort responses to combined whole-body vibration and noise in Vietnamese and Japanese participants. Twenty stimuli, comprising five vibration magnitudes and six noise levels induced by ground transportation traffic (road traffic, Shinkansen railway, and conventional railway), were applied. Combined effects …

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Socio-acoustic survey on railway noise before and after the step changes in noise exposure and earthquakes in Kumamoto, Japan

Takashi Morihara, Koji Shimoyama, Shigenori Yokoshima, Makoto Morinaga et autres

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Update of the representative relationship between exposure and annoyance due to traffic noise in Japan

Shigenori Yokoshima, Makoto Morinaga, Sohei Tsujimura, Koji Shimoyama et autres

The authors published an original paper entitled “Representative exposure–annoyance relationships due to transportation noises in Japan” in 2021. In this paper, we established the relationship between noise exposure (L den) and the prevalence of highly annoyed people (cut-off point with 72%) for …

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Sleep disturbance due to road traffic noise: A socio-acoustic survey using Lnight estimated from noise maps

Makoto Morinaga, Shigenori Yokoshima, Sohei Tsujimura, N. Suda et autres

A socio-acoustic survey was conducted in Kanagawa Prefecture, Japan, to investigate the relationship between road traffic noise and sleep disturbance. Nighttime noise exposure (Lnight) was estimated using the ASJ RTN-model 2013 and categorized in 5 dB intervals from 30 to 80 dB. …

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Social survey on the impact of noise and vibration from the Hokuriku Shinkansen extension

Takashi Morihara, Makoto Morinaga, Sohei Tsujimura, Yasuhiro Hiraguri et autres

In March 2024, the Hokuriku Shinkansen was extended, and service began on the section from Tokyo to Tsuruga in Fukui Prefecture. In 2016, a survey was conducted 1 year after the line opened to Kanazawa, which revealed that the effects of parallel …

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Effect of combined exposure to railway noise and vibration on community response in detached houses

Shigenori Yokoshima, Takashi Morihara, Kentaro Hayashi, Yasunao Matsumoto

The authors conducted a secondary analysis using individual data obtained from previous social surveys to summarize the effects of combined exposure to railway noise and vibration on community response in Japan. In order to obtain the detailed understanding of the effects of …

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An investigation of the evaluation of subjective responses to simultaneous vertical and horizontal vibrations in residential environments

Yasunao Matsumoto, Takashi Morihara, Shigenori Yokoshima, Kentaro Hayashi

Vibrations induced in buildings by road traffic or railways generally exhibit larger amplitudes in the vertical direction than in the horizontal direction. However, in small-scale buildings such as detached houses in Japan, structural vibration modes of the building dominated in motions in …

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Relationships Between Road and Railway Noise Exposure and Self-Reported Sleep Disturbance for Detached Houses in Japan

Makoto Morinaga, Shigenori Yokoshima, Takashi Morihara

This paper focuses on clarifying the relationship between noise exposure and the prevalence of highly sleep-disturbed (HSD) people due to road traffic and railway noise in Japan. The authors accumulated 22 datasets, which were provided by the Socio-Acoustic Survey Data Archive and …

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An investigation of the effect of vibration duration on the evaluation of subjective responses to horizontal vibration

Yasunao Matsumoto, Shigenori Yokoshima, Toyohiko Higashida

Abstract A laboratory experiment was conducted to investigate an evaluation method for building habitability based on subjective responses to vibrations caused by external sources. Twenty‐five individuals participated in the experiment, which involved 76 input stimulus conditions, including vibrations based on field records …

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Experiments on the peculiar region and threshold of oppressive or vibratory sensation caused by low-frequency pure tones

Makoto Morinaga, Shigenori Yokoshima, Tomohiro Kobayashi, Sakae Yokoyama et autres

The oppressive or vibratory sensation caused by low-frequency sound is a widely known sensation inherent to that type of sound. In previous studies using one-third octave band noise as stimuli, the frequency region that causes the oppressive or vibratory sensation was felt …

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Research on the effects of railway noise and biaxial vibration on calculation disturbances

Takashi Morihara, Yasunao Matsumoto, Shigenori Yokoshima, Kentaro Hayashi et autres

This study conducted an evaluation experiment on simultaneous exposure to noise and two-axis vibration stimuli from railways, using noise stimuli from railways and two-axis vibration stimuli in the horizontal-vertical direction, and verified differences in evaluation of interference due to differences in noise …

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A case study on the exposure-response relationship of sleep disturbance due to road traffic noise - As a case in Japan in the 2020s

Makoto Morinaga, Shigenori Yokoshima, Sohei Tsujimura, N. Suda et autres

A socio-acoustic survey was conducted among residents living along major arterial roads in Kanagawa Prefecture, Japan, to examine the occurrence of sleep disturbances due to road traffic noise. Lnight noise maps was introduced for estimating ranges from 30 dB to 80 dB. …

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