A survey on the effect of room sound absorption to improve communication for students’ on-site educational practice in preschools
Keiji Kawai, Tomoko Katakawa, Arata Yoshida Proceedings of the Inter-Noise 2026, 2026
A fundamental study on absorption boundary conditions and arbitrary geometries in the time-domain element-free Galerkin method for room acoustic analysis
Jun Sasaoka, Keiji Kawai Proceedings of the Inter-Noise 2026, 2026
A two-year field experiment on the effect of sound absorption on acclimation of children to kindergarten life
Ikuri Matsuoka, Nozomu Noguchi, Keiji Kawai Proceedings of the Inter-Noise 2026, 2026
A field experiment on the effect of sound absorption on acclimation of new children to kindergarten —Time ratio of children’s crying by acoustic event detection with neural network.
Keiji Kawai, Manabu Okamoto, Reo Hori, Naoya Maruyama Sixth Joint Meeting Acoustical Society of America/ Acoustical Society of Japan, 2025
A parametric study of Element-Free Galerkin Method for room acoustics numerical simulation.
Jun Sasaoka, Keiji Kawai Sixth Joint Meeting Acoustical Society of America/ Acoustical Society of Japan, 2025
An attempt to apply the element-free Galerkin method to room acoustics simulation
Jun Sasaoka, Keiji Kawai 188th Meeting of the Acoustical Society of America/25th International Congress on Acoustics, 2025
A field survey on speech privacy in open-plan offices: Quantitative assessment of speech leakage during working hours
Naoya Maruyama, Ainun Nadiroh, Miyu Maruyama, Keiji Kawai 188th Meeting of the Acoustical Society of America/25th International Congress on Acoustics, 2025
Afield experiment on the effect of sound absorption on acclimation of new children to kindergarten —Part 1: Analysis of crying children and indoor noise levels
Ikuri Matsuoka, Keiji Kawai 188th Meeting of the Acoustical Society of America/25th International Congress on Acoustics, 2025
Afield experiment on the effect of sound absorption on acclimation of new children to kindergarten —Part 2: Estimating children’s crying by acoustic event detection
Keiji Kawai, Ikuri Matsuoka, Reo Hori, Naoya Maruyama 188th Meeting of the Acoustical Society of America/25th International Congress on Acoustics, 2025
An experiment on the installation of small calming spaces in childcare rooms - Frequency of use with internal sound absorption
Keiji Kawai, Megumi Tsuru Proceedings of the Inter-Noise 2024, 2024
A field experiment on the effect of sound absorption installed to a highly reverberant kindergarten classroom: A second report
Keiji Kawai, Yuuki Matsufuji, Megumi Tsuru, Midori Ishizawa Proceedings of the Inter-Noise 2023, 2023
Widespread area estimation of Shinkansen Superexpress Railway noise for noise mapping in Japan
Naoya Maruyama, Kazunori Harada, Akiko Sugahara, Yasuhiro Hiraguri, Shigenori Yokoshima Proceedings of the Inter-Noise 2023, 2023
Effect of sound absorption on performance in cognitive tasks: Focusing on characteristics of subjects with developmental disabilities
Naoya Maruyama, Keiji Kawai, Teppei Kikuchi Proceedings of the Inter-Noise 2023, 2023
Effects of sound absorption and screen on reading aloud to children in classroom situation: An experiment with student participants
Naoya Maruyama, Moeko Yamaguchi, Keiji Kawai Proceedings of the 24th International Congress on Acoustics, 2022, A12, p. 235-240
Effect of sound absorption on children’s behavior in daycare rooms: a field experiment with installation of temporary sound absorption.s
Keiji Kawai Proceedings of the 23rd International Congress on Acoustics, 2019, p. 7104-7109
Acoustic Comfort in Multi-group Conversation Space: a Field Experiment in an Actual Cafe with Different BGM Levels
Naoya Maruyama, Yasuhito Hiraguri, Keiji Kawai, Mari Ueda Proceedings of the 23rd International Congress on Acoustics, 2019, p. 4178-4195
Social survey on community response to road traffic noise in Kinshasa，Democratic Republic of the Congo
Junior Nzelengenge Tambiki, Keiji Kawai Proceedings of the 2018 International Congress and Exposition of Noise Control Engineering, 2018, p. 3919-3929
Effect of Sound Absorption on Children’s Concentration to Listening to Teacher’s Speech in a Child Daycare Room
Keiji Kawai, Momoko Otaku Proceedings of the 2018 International Congress and Exposition of Noise Control Engineering, 2018
Experimental investigation of effect of background noise and reverberation on listening comprehension of pre-school children
Keiji Kawai, Momoko Otaku Proceedings. of 11th European Congress and Exposition on Noise Control Engineering, 2018, p. 1773-1776
A survey on acoustic comfort of conversing in multi-group conversation space
Naoya Maruyama, Shiho Takata, Yasuhito Hiraguri, Keiji Kawai, Mari Ueda Proceedings of the Inter-Noise 2017, 2017, p. 5083-5090
Sound from rain drops impacting double layer structure consisted of mesh fabric
Yuji Hirayama, Yasuhito Hiraguri, Mari Ueda, Keiji Kawai Proceedings of the Inter-Noise 2017, 2017, p. 5187-5193
An Experiment on Word Intelligibility of Pre-School Children with Different Reverberation and Signal–Noise Ratios Conditions
Kazunori Harada, Keiji Kawai Proceedings of the Fifth International Conference on Human-Environment System, 2016
Effect of Sound Absorption for Child Day Care Rooms: A Field Study Using Easy-Detachable Sound Absorbers
Keiji Kawai, Jun Maruyama Proceedings of the Fifth International Conference on Human-Environment System, 2016
A comprehensive survey on the current acoustic environment in child day care centers in the Kumamoto city region, southwest Japan
Keiji Kawai Proceedings of the 22nd International Congress on Acoustics, 2016, Paper ICA2016-178
Current Acoustical Situation of Nursery Facilities in Japan - A Census Field Survey for Kumamoto City region
Keiji Kawai Proceedings of the 12th Western Pacific Acoustics Conference (WESPAC2015), 2015, O4000204
Overview of acoustic environment of nursery facilities in Japan – Present situation and recent studies
Keiji Kawai, Kanako Ueno, Saki Takeoka, Hisao Funaba Proceedings of the 7th Forum Acusticum 2014, 2014, R03C_7
Fundamental investigation of easy to talk at multigroup communication space
Yasuhiro Hiraguri, Mari Ueda, Keiji Kawai, Takashi Yano Proceedings of the 11th International Congress on Noise as a Public Health Problem, 2014
Analysis on factors affecting community responses to transportation noises in Japan using the Socio-Acoustic Survey Data Archive, SASDA
Keiji Kawai, Sigenori Yokoshima, Takashi Yano, Makoto Morinaga, Atsushi Ota, Takashi Morihara Proceedings of the 11th International Congress on Noise as a Public Health Problem, 2014
A field survey on acoustic privacy for open plan offices: acoustic and noise measurement
Ainun Nadiroh，Naoya Maruyama，Keiji Kawai 日本音響学会第152回（2024秋季）研究発表会, 大阪, 2024
