Updated on 2025/06/09

Information

 

写真a

 
INOUE NAOHISA
 
Organization
Faculty of Design Department of Acoustic Design Assistant Professor
Graduate School of Design Department of Design（Concurrent）
Title
Assistant Professor
Profile
建築音響学，計算音響学の分野において，材料の吸音・遮音に関わる研究・教育活動に従事している。
External link

Degree

  • Ph.D.

Research History

  • 前橋工科大学 工学部建築学科   

Education

  • The University of Tokyo   大学院新領域創成科学研究科   社会文化環境学専攻 博士課程

    2012.4 - 2015.3

  • The University of Tokyo   大学院新領域創成科学研究科   社会文化環境学専攻 修士課程

    2010.4 - 2012.3

Research Interests・Research Keywords

  • Research theme： Development of methods for measuring the performances of acoustic materials

    Keyword： Measurement, sound absorption, insulation

    Research period： 2023.4

  • Research theme： Development of Acoustic materials and structures

    Keyword： Sound absorption, insulation, reflection, resonance

    Research period： 2023.4

Awards

  • 若手最優秀発表賞

    2024.3   日本音響学会建築音響研究委員会   本賞は、建築音響研究の将来を担っていく優秀な若手研究者を奨励することを目的とし、建築音響研究会において、特に優れた発表を行った若手研究者に授与するものである。周波数領域の再生核を用いた音場表現に基づくキルヒホッフ‐ヘルムホルツ積分方程式の数値解法にて，受賞。

Papers

  • Experimental and theoretical analysis for improvement of heavy-weight impact sound insulation of dry-type double floor structure using heavy/soft impact source

    Cao, D; Aida, Y; Inoue, N; Sakuma, T

    APPLIED ACOUSTICS   236   2025.6   （ ISSN:0003-682X eISSN:1872-910X ）

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    Publisher：Applied Acoustics  

    The dry-type double floor structure is commonly installed in Japanese apartments. However, the heavy-weight impact sound insulation is often deteriorated due to the resonance effect of the air layer between the floor panels and the concrete slab. This study introduces a theoretical 3-degree-of-freedom (3-DOF) model to investigate the improvement of impact sound insulation for the double floor structure using rubber ball. First, a SDOF model for the collision of rubber ball is proposed that can reproduce the impact force exposure level accurately. Then, an experimental analysis is conducted using a specimen with particle board and support legs to obtain the support leg stiffness. It is validated that the proposed model for support legs can reproduce their transfer force characteristics accurately. Finally, the parametric study is performed to investigate the effects of varying support leg stiffness, air layer thickness, and floor panel density on the improvement of heavy-weight impact sound insulation. The results can be used to optimize the double floor structures to achieve better sound environment in residential buildings.

    DOI： 10.1016/j.apacoust.2025.110723

    Web of Science

    Scopus

  • Modification of single-degree-of-freedom models for standard heavy-weight impact sources

    Cao Da, Aida Yu, Inoue Naohisa, Sakuma Tetsuya

    Acoustical Science and Technology   46 ( 3 )   242 - 245   2025.5   （ ISSN:13463969 eISSN:13475177 ）

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    Language：English   Publisher：ACOUSTICAL SOCIETY OF JAPAN  

    <p>Ball and tire impact sources are used as standard heavy-weight impact sources to induce heavy-weight impact sound. To predict the impact sound insulation performance accurately, the modeling of impact sources is important. In this paper, new single-degree-of-freedom (SDOF) models are proposed. Numerical calculations validate that using the proposed SDOF models can predict the impact force exposure levels accurately. Then, a numerical example is used to investigate changes in impact force exposure levels when impact sources acting on the dry-type double floor system.</p>

    DOI： 10.1250/ast.e24.111

    Web of Science

    CiNii Research

  • Orthonormality of Spherical Basis Functions for Interior Problems of the Helmholtz Equation

    Takahiro Iwami, Naohisa Inoue, Akira Omoto

    Acoustical Science and Technology   2025

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACOUSTICAL SOCIETY OF JAPAN  

    <p>Two finite element models have recently been utilized to predict the sound absorption coefficient of periodically arranged slit resonators. One is based on the linearized Navier–Stokes equation, entropy conservation law, and mass conservation law. The other is based on the Helmholtz equation with the visco-thermal boundary layer boundary condition. This paper clarifies a condition under which the latter model gives a reasonable approximation. A transition frequency is derived from Johnson–Allard’s effective density of porous media as a criterion. Calculation results demonstrate that the resonator’s resonance frequency must be higher than the transition frequency to obtain a reasonable prediction using the boundary condition model.</p>

  • Comparison of finite element models for predicting sound absorption coefficients of infinitely periodical slit resonators

    Yonezawa Mio, Inoue Naohisa

    Acoustical Science and Technology   advpub ( 0 )   324 - 328   2024   （ ISSN:13463969 eISSN:13475177 ）

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    Language：English   Publisher：ACOUSTICAL SOCIETY OF JAPAN  

    <p>Two finite element models have recently been utilized to predict the sound absorption coefficient of periodically arranged slit resonators. One is based on the linearized Navier–Stokes equation, entropy conservation law, and mass conservation law. The other is based on the Helmholtz equation with the visco-thermal boundary layer boundary condition. This paper clarifies a condition under which the latter model gives a reasonable approximation. A transition frequency is derived from Johnson–Allard’s effective density of porous media as a criterion. Calculation results demonstrate that the resonator’s resonance frequency must be higher than the transition frequency to obtain a reasonable prediction using the boundary condition model.</p>

    DOI： 10.1250/ast.e24.52

    Web of Science

    Scopus

    CiNii Research

  • Fast Multipole Boundary Element Method for Aerodynamic Sound Field Analysis Based on Lighthill's Equation

    Masumoto T., Mori M., Yasuda Y., Inoue N., Sakuma T.

    Journal of Theoretical and Computational Acoustics   31 ( 3 )   2023.9   （ ISSN:25917285 ）

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    Publisher：Journal of Theoretical and Computational Acoustics  

    The primary disadvantage of the aerodynamic sound field analysis based on the Lighthill's equation using the boundary element method (BEM) is the computational time; this is mainly because contributions from numerous aerodynamic sound sources are computed at all boundary element nodes and sound-receiving points. This study proposes a fast method for computing source contributions based on the fast multipole method (FMM). Along with the fast multipole BEM, which is already in practical use as a fast BEM, the analysis is substantially accelerated. The use of a common hierarchical cell structure for grouping boundary element nodes, sound-receiving points and aerodynamic sound sources, enables coefficients of the FMM to be reused, thereby further accelerating the analysis. To deal with the increasing hierarchical level, a wideband FMM is applied. In the sound radiation analysis of a quadrupole source located in a free field, the accuracy is validated. Sound radiation from a cylinder located in a flow is analyzed as a practical problem; the accuracy and numerical settings are discussed. Finally, the proposed method is applied to a problem with more than 0.4 million degrees-of-freedom and more than 3 million aerodynamic sound sources to demonstrate its applicability to large-scale problems.

    DOI： 10.1142/S2591728523500093

    Scopus

  • An experimental study on the influence of incident characteristics on sound insulation between rooms: Study on the incident sound field in the insulation performance measurement for partition walls. Part 2

    Aida Y., Inoue N., Sakuma T.

    Japan Architectural Review   5 ( 4 )   494 - 506   2022.10

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    Publisher：Japan Architectural Review  

    The sound field characteristics due to room modes are considered to have strong influences on the low-frequency sound insulation between rooms in field. In this paper, the sound field analysis using the propagation mode expansion method proposed by the authors was applied to the test rooms where the dwelling rooms and the separating wall of an RC apartment building were reproduced. First, the proposed method was validated through the reconstruction of the expanded sound fields and the measurement of the incident directivity. Next, the comparison of the multiple geometries of the source room with two finishing conditions of the RC separating wall demonstrated the influence of the incident sound field on the sound insulation. The mechanism of the sound insulation between rooms was investigated using the proposed method. For the RC single wall, the sound field analysis showed an influence of mode matching between rooms on the low-frequency transmitted sound. For the composite wall which was composed of the RC separating wall and the additional linings, it was demonstrated that the low-frequency resonance transmission phenomenon is affected by the matching of the oblique incidence resonance frequency of the wall and the incident characteristics.

    DOI： 10.1002/2475-8876.12276

    Scopus

  • NUMERICAL MODELING OF SOUND INSULATION MEASUREMENT FOR MEMBRANE MATERIALS IN RECTANGULAR TEST ROOMS

    Nishizawa K., Inoue N., Sakuma T.

    AIJ Journal of Technology and Design   28 ( 68 )   251 - 254   2022.2   （ ISSN:13419463 ）

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    Publisher：AIJ Journal of Technology and Design  

    Numerical simulation of the laboratory measurement of sound transmission loss in rectangular test rooms is realized up to high frequency bands, using the fast multipole boundary element method. Setting membrane materials as reference samples, numerical results with fine and simplified room models are validated in comparison with measured and theoretical values. In addition to the sound-pressure-based method, another sound-intensity-based method is numerically simulated. It is demonstrated that the former method overestimates transmission loss at low frequency bands, while the latter method gives the values in relatively good accordance with theoretical ones.

    DOI： 10.3130/aijt.28.251

    Scopus

  • A basic study on incidence directivity analysis using multipole and local expansions

    Yasuda Y., Masumoto T., Inoue N., Sakuma T.

    Acoustical Science and Technology   43 ( 1 )   77 - 80   2022.1   （ ISSN:13463969 ）

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    Publisher：Acoustical Science and Technology  

    DOI： 10.1250/ast.43.77

    Scopus

  • A basic study on incidence directivity analysis using multipole and local expansions Reviewed International journal

    Y. Yasuda, T. Masumoto, N. Inoue, T. Sakuma

    Acoust. Sci. Tech.   43 ( 1 )   77 - 80   2022.1

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Optimization of sound insulation performance of a layered structure with perforated honeycomb panel

    Kong K., Inoue N., Sakuma T.

    Proceedings of the International Congress on Acoustics   2022   （ ISSN:22267808 ）

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    Publisher：Proceedings of the International Congress on Acoustics  

    A honeycomb panel is often used as resonator-type sound absorbing material by perforating an array of holes on the surface. By layering the perforated honeycomb panel (PHP) with a flexible sheet out of contact on the perforated surface, the layered structure acts as double panel, thus improving sound insulation performance in a high frequency range but causing low-frequency resonance transmission. In this paper, the resonance transmission phenomenon of the layered structure is theoretically modeled, and a parametric study is conducted for optimization of sound insulation performance. The results clarify the effects of the porosity of PHP, the thicknesses of PHP and air layer, and the areal density of sheet. In addition, the overall performance is evaluated by single-number quantity based on ISO-717-1, and several charts are presented for optimal design of the structure.

    Scopus

  • Finite element analysis of bending waves in Mindlin plates with Perfectly Matched Layers

    Cao D., Inoue N., Sakuma T.

    Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering   2022   （ ISBN:9781906913427 ）

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    Publisher：Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering  

    It is important to determine the boundary conditions of walls and floors precisely when simulating the building acoustics. For a certain room, the extension of the spans can be considered as infinite edges. The Perfect Matched Layer (PML) is an artificial absorbing domain for the wave propagations and is widely used in finite element analysis to simulate the acoustical free field conditions right now. In this paper, an effective PML technique for the plate structure will be presented. The PML formulation will be derived based on the Mindlin plate theory and the implementation method will be introduced. This technique will be validated through the numerical experiments. The accuracy and limits of the presented technique will be discussed based on the numerical results compared with the analytical results. The results show that the presented PML technique is effective and accurate to simulate the plate as an infinite large plate. It is expected to implement the technique in the further research of the structure borne sound, such as floor impact sounds.

    Scopus

  • Experimental study on vibration response of wooden house façade to low-frequency outdoor sound

    Liu J., Inoue N., Sakuma T.

    Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering   2022   （ ISBN:9781906913427 ）

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    Publisher：Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering  

    Generally wooden house has low sound insulation performance for low-frequency outdoor noise due to the lightweight façade wall system. Moreover, the sound insulation performance is caused by the vibration responses of window and wall systems, that are strongly coupled with normal modes in a room. In order to clarify the complicated phenomena, field measurements of vibration characteristics are conducted for a test house with Japanese traditional wooden structure, under the cases with single/double window systems. As outdoor sound source, low-frequency band noise from 25 Hz to 160 Hz is emitted from a subwoofer, and vibration acceleration is measured on each element, such as window glazing, interior walls, floor, and ceiling. From the analysis of measured vibration transfer functions and indoor sound pressure distribution, the vibration characteristics of the whole coupled system are discussed, especially on the effect of different window systems.

    Scopus

  • Experimental and theoretical study on transfer force characteristics of support legs of dry-type double floor system

    Cao D., Aida Y., Inoue N., Sakuma T.

    Proceedings of the International Congress on Acoustics   2022   （ ISSN:22267808 ）

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    Publisher：Proceedings of the International Congress on Acoustics  

    The dry-type double floor system, which is popularly installed for apartment buildings in Japan, has a negative aspect that it generally causes deterioration of heavy-weight floor impact sound insulation. To predict the effect of the double floor, all the components of the vibro-acoustic system need to be modeled precisely. In this paper, an experimental and theoretical study is conducted to investigate the transfer force characteristics of support legs of the double floor. In the experiment, a small specimen with four support legs is impacted by the standard rubber ball, and the transfer force is measured under the legs, where changing the fall height of the impact source, the mass of upper flooring, the type and adhesive condition of support legs. A simple theoretical model is introduced for the double floor system, and the viscoelastic properties for support leg and rubber ball are estimated from the experimental results. Finally, this approach is validated by using a 2-DOF system, showing that it can well simulate the transfer force characteristics of support legs.

    Scopus

  • Incidence directivity analysis based on FMBEM, Part 1: Fundamentals of the method

    Yasuda Y., Masumoto T., Inoue N., Sakuma T.

    Proceedings of the International Congress on Acoustics   2022   （ ISSN:22267808 ）

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    Publisher：Proceedings of the International Congress on Acoustics  

    The incidence directivity for a certain region of a sound field is important for evaluating the diffuseness of the sound field and the in-situ performance of sound diffusers and sound absorbers. The plane wave expansion (angular spectrum) is used to describe the incidence directivity, but it is important to know the region where the directivity is evaluated, and the errors caused by various numerical treatments, when dealing with the incidence directivity. The plane wave expansion also appears as a variant of the multipole expansion and local expansion in the fast multipole boundary element method (FMBEM), which is known as a highly efficient wave-based numerical method. Therefore, the incidence directivity of an arbitrary region in the sound field can be calculated efficiently by combining the sound field analysis by FMBEM and plane wave expansion that represents the incidence directivity. In this paper, as fundamentals for efficient calculation of incidence directivity based on FMBEM, a basic study assuming a sound field with a point source is presented. Errors arising from the numerical treatment of multipole and local expansions and the relationship between incidence directivity and the corresponding sound receiving region are discussed.

    Scopus

  • Validation of the low-frequency procedure for field measurement of façade sound insulation Reviewed International journal

    J. Liu, N. Inoue, T. Sakuma

    Buildings   11 ( 11 )   547   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)  

  • 背後空気層を有する背面穿孔ハニカム板の吸音特性 −2自由度モデルに基づく考察− Invited Reviewed International journal

    井上尚久, 孔敬受, 佐久間哲哉

    騒音制御   44 ( 6 )   326 - 333   2020.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Fast calculation of far-field sound directivity based on fast multipole boundary element method Reviewed International journal

    T. Masumoto, Y. Yasuda, N. Inoue, T. Sakuma

    J. Theo. Comp. Acoust.   28 ( 4 )   1950024   2020.11

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    Language：English   Publishing type：Research paper (scientific journal)  

  • An experimental analysis method for the incident sound field using propagation mode expansion: Study on the incident sound field in the insulation performance measurement for partition walls, Part 1 Reviewed International journal

    Y. Aida, N. Inoue, T. Sakuma

    Jpn. Archit. Rev.   3   615 - 628   2020.6

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    Language：English   Publishing type：Research paper (scientific journal)  

  • 矩形試験室における膜材料の音響透過損失測定に関する数値モデリング Reviewed

    西沢啓子, 井上尚久, 佐久間哲哉

    日本建築学会環境系論文集   28 ( 68 )   251 - 254   2020.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 残響室における壁体の音響透過損失測定の数値シミュレーション −複合部材の低音域共鳴透過に関する検討− Reviewed

    會田祐, 井上尚久, 佐久間哲哉

    日本建築学会環境系論文集   85 ( 768 )   115 - 124   2020.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 室間遮音性能への入射特性の影響に関する実験的検討 −界壁遮音性能測定時の入射音場に関する研究 その２− Reviewed

    會田祐, 井上尚久, 佐久間哲哉

    日本建築学会環境系論文集   84 ( 764 )   893 - 902   2019.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Impedance modeling of elastic boundary support in the vibration field of a thin plate Reviewed International journal

    N. Inoue, T. Sakuma

    Acoust. Sci. Tech.   39 ( 6 )   387 - 396   2018.11

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    Language：English   Publishing type：Research paper (scientific journal)  

  • 伝搬モード展開を用いた入射音場の実験的解析手法の検討 −界壁遮音性能測定時の入射音場に関する研究 その１− Reviewed

    會田祐, 井上尚久, 佐久間哲哉

    日本建築学会環境系論文集   83 ( 752 )   821 - 830   2018.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Finite element modeling of acoustic resonators with thermal and viscous boundary layers Reviewed International journal

    N. Inoue, T. Sakuma

    Acoust. Sci. Tech.   39 ( 5 )   355 - 358   2018.9

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Numerical examination of niche effect on sound transmission loss of glass panes Reviewed International journal

    T. Sakuma, N. Inoue, T. Seike

    Acoust. Sci. Tech.   38 ( 6 )   279 - 286   2017.11

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Numerical investigation of effect of support conditions of poroelastic materials in the impedance tube measurement Reviewed International journal

    N. Inoue, T. Sakuma

    Acoust. Sci. Tech.   38 ( 4 )   213 - 221   2017.7

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    Language：English   Publishing type：Research paper (scientific journal)  

  • A laboratory method for measuring normal-incidence scattering coefficients of architectural surfaces Reviewed International journal

    T. Sakuma, H. Lee, N. Inoue

    Acoust. Sci. Tech.   37 ( 6 )   277 - 285   2016.11

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Computational benchmark on sound transmission through an elastic plate: Comparison between frequency-domain and time-domain approaches Reviewed International journal

    T. Asakura, T. Seike, N. Inoue, T. Sakuma

    Acoust. Sci. Tech.   36 ( 4 )   355 - 357   2015.4

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    Language：English   Publishing type：Research paper (scientific journal)  

▼display all

Books

  • 音環境の数値シミュレーション ー波動音響解析の技法と応用ー［第二版］

    日本建築学会（Role：Edit）

    2021.12 

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    Language：Japanese   Book type：Scholarly book

  • 自動車用制振・遮音・吸音材料の最新動向

    山本崇史（Role：Supervisor (editorial)）

    シーエムシー出版  2018.3 

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    Language：Japanese   Book type：Scholarly book

  • Computational Simulation in Architectural and Environmental Acoustics — Methods and Applications of Wave-Based Computation

    T. Sakuma, S. Sakamoto, T. Otsuru（Role：Edit）

    Springer, Tokyo  2014.8 

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    Language：English   Book type：Scholarly book

Presentations

  • 有限要素法による二重天井の重量床衝撃音解析に関する基礎的検討

    曹 達, 會田 祐, 井上 尚久, 佐久間 哲哉

    日本音響学会春季研究発表会  2025.3 

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    Event date： 2025.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • RC造建物における床加振時の構造体振動および二重床振動低減量に関する実験

    會田 祐, 室 裕希，井上 尚久, 佐久間 哲哉

    日本音響学会春季研究発表会  2025.3 

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    Event date： 2025.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 微小粘性空気層を介して連結する積層板材の音響透過損失の数値解析的検討

    米澤 美桜，井上 尚久

    日本音響学会春季研究発表会  2025.3 

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    Event date： 2025.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 放射・受音指向性を考慮した鏡像法による音場解析

    岩見 貴弘，井上 尚久，尾本 章

    日本音響学会春季研究発表会  2025.3 

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    Event date： 2025.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 複層ガラスの斜入射音響透過損失の数値解析 −スペーサの物性値の影響−

    山崎 泰知, 田中 ひかり, 増田 潔, 井上 尚久, 佐久間 哲哉

    日本騒音制御工学会秋季研究発表会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 乾式二重床の重量床衝撃音レベル低減量に関する数値解析 −支持脚・際根太の影響−

    曹 達, 會田 祐, 井上 尚久, 佐久間哲哉

    日本騒音制御工学会秋季研究発表会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 一般次元 Helmholtz 方程式の極座標解についての考察

    岩見 貴弘，井上 尚久，尾本 章

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 一般指向性素子間の相反原理

    岩見 貴弘，井上 尚久，尾本 章

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 壁面吸音を考慮した矩形室の固有モード展開解析における音源・受音指向性の導入

    井上 尚久，岩見貴弘，尾本章

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 仮想球面のコーシーデータに基づく球中心での受音指向性の合成

    井上 尚久，岩見貴弘，尾本章

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 複層ガラスの斜入射音響透過損失の数値解析 −中空部の粘性減衰の影響−

    山崎 泰知, 田中 ひかり, 増田 潔, 井上 尚久, 佐久間 哲哉

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 外周壁遮音性能の低周波測定法に関する数値解析的検討 −室寸法の適用範囲の検証−

    劉 金雨, 井上 尚久, 佐久間 哲哉

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • バフル板の振動を考慮した周期配置スリット共鳴器の吸音率予測における有限要素モデルの比較

    米澤 美桜，井上 尚久

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 実験室における乾式二重床構造の重量床衝撃音レベルの実測値と解析値の対応

    曹 達, 會田 祐, 井上 尚久, 佐久間 哲哉

    日本音響学会秋季研究発表会  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 低周波域における外周壁遮音性能測定法と測定事例

    劉 金雨, 井上 尚久, 佐久間 哲哉

    日本建築学会大会学術講演梗概集  2024.8 

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  • 標準重量衝撃源の理論モデルに関する検討

    曹 達, 會田祐, 井上 尚久, 佐久間 哲哉

    日本建築学会大会学術講演梗概集  2024.8 

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 斜入射音響透過損失の実験室測定法の可能性と課題

    山崎 泰知, 田中 ひかり, 増田 潔, 井上 尚久, 佐久間 哲哉

    日本建築学会大会学術講演梗概集  2024.8 

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    Event date： 2024.8

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  • Examination of the effect of air gaps on impact sound insulation performance of dry-type double floor system International conference

    D. Cao, Y. Aida, N. Inoue, T. Sakuma

    Internoise 2024  2023.8 

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    Event date： 2024.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：France  

  • A novel numerical method for solving the Kirchhoff–Helmholtz integral equation based on the sound field representation using the reproducing kernel in the frequency domain International conference

    N. Inoue, T. Iwami, A. Omoto

    Internoise 2024  2023.8 

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    Event date： 2024.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：France  

  • Expanded acoustic reciprocity and directivity synthesis of musical instruments using microphone array International conference

    T. Iwami, N. Inoue, A. Omoto

    Internoise 2024  2023.8 

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    Event date： 2024.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：France  

  • 周期配置スリット共鳴器の吸音率予測における有限要素モデルの比較

    #米澤美桜, 井上尚久

    日本音響学会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：拓殖大学   Country：Japan  

  • 衝撃源の違いによる乾式二重床構造の重量床衝撃音レベル低減量の変化に関する数値解析的検討

    曹達, 會田祐, 井上尚久, 佐久間哲哉

    日本音響学会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • 膜・多孔質弾性材料間の連続条件が吸遮音性能に及ぼす影響の数値解析的考察

    井上尚久

    日本音響学会  2024.3 

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    Event date： 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • 周波数領域の再生核を用いた音場表現に基づくキルヒホッフ–ヘルムホルツ積分方程式の数値解法

    井上 尚久，岩見 貴弘，尾本 章

    日本音響学会建築音響研究会  2024.1 

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    Event date： 2024.1

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • タイヤおよびボール衝撃源による乾式二重床の各部応答の比較

    曹達, 會田祐, 井上尚久, 佐久間哲哉

    日本騒音制御工学会  2023.11 

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    Event date： 2023.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：山梨県立やまなし地域づくり交流センター   Country：Japan  

  • 斜入射音響透過損失の実験室測定におけるニッシェ深さに関する数値解析的検討

    山崎泰知, 田中ひかり, 増田 潔, 井上尚久, 佐久間哲哉

    日本騒音制御工学会  2023.11 

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    Event date： 2023.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：山梨県立やまなし地域づくり交流センター   Country：Japan  

  • 屋外低周波音に対する木造家屋の外周壁振動性状に関する実験的検討

    劉金雨，井上尚久, 佐久間哲哉

    日本騒音制御工学会  2023.11 

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    Event date： 2023.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：山梨県立やまなし地域づくり交流センター   Country：Japan  

  • 周波数領域の再生核を用いた音場表現に基づくヘルムホルツ方程式の数値解法 –その２ 境界積分方程式の解法–

    井上 尚久，岩見 貴弘，尾本 章

    日本音響学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • 斜入射音響透過損失の実験室測定における音源条件に関する数値解析的検討

    山崎泰知, 田中ひかり, 増田 潔, 井上尚久, 佐久間哲哉

    日本音響学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • 実験室における乾式二重床構造の床衝撃音低減性能に関する数値解析的検討

    曹達, 會田祐, 井上尚久, 佐久間哲哉

    日本音響学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • 周波数領域の再生核を用いた音場表現に基づくヘルムホルツ方程式の数値解法 –その１ 弱形式方程式の解法–

    井上 尚久，岩見 貴弘，尾本 章

    日本音響学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：名古屋工業大学   Country：Japan  

  • 厚板シェル振動場の有限要素解析におけるPML 要素の開発

    井上 尚久，曹 達，佐久間 哲哉

    日本建築学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：京都大学   Country：Japan  

  • 重量衝撃源を対象とした二重床支持脚ばねの非線形モデルに関する検討

    曹達, 會田祐, 井上尚久, 佐久間哲哉

    日本建築学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：京都大学   Country：Japan  

  • ベイズ最適化を用いたガラスシーリング材の物性値推定

    山崎泰知, 田中ひかり, 増田 潔, 井上尚久, 佐久間哲哉

    日本建築学会  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

    Venue：京都大学   Country：Japan  

  • Experimental and numerical study on transfer force characteristics and sound pressure in air layer of dry-type double floor system International conference

    Da Cao, Naohisa Inoue, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • FMBEM simulation of the laboratory measurement of sound transmission loss in rectangular test rooms International conference

    Keiko Nishizawa, Naohisa Inoue, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • A basic study on laboratory measurement of oblique-incidence sound transmission loss of building elements International conference

    Yasutomo Yamasaki, Hikari Tanaka, Kiyoshi Masuda, Naohisa Inoue, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Theoretical and numerical analysis on low-frequency sound transmission from façades into room International conference

    Liu Jinyu, Naohisa Inoue, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Wideband fast multipole boundary element method for flow-induced noise analysis based on Lighthill’s equation International conference

    Takayuki Masumoto, M. Mori, Yosuke Yasuda, Naohisa Inoue, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Boundary treatments for the finite element analysis of shell vibration fields of architectural structures extracted with edge truncations International conference

    Naohisa Inoue, Da Cao, Tetsuya Sakuma

    Internoise 2023  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (general)  

    Venue：幕張メッセ   Country：Japan  

  • 矩形試験室における低周波域の音響透過損失測定に関する実験的検討

    西沢啓子, 井上尚久, 佐久間哲哉

    日本音響学会建築音響研究会  2023.6 

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    Event date： 2023.6

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 外周壁から室内への低音域音響透過に関する理論的・数値解析的検討

    劉金雨, 井上尚久, 佐久間哲哉

    日本音響学会建築音響研究会  2023.5 

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    Event date： 2023.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

  • 建築部材の斜入射音響透過損失の実験室測定に関する基礎的検討

    山崎泰知, 田中ひかり, 増田潔, 井上尚久, 佐久間哲哉

    日本音響学会建築音響研究会  2023.5 

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    Event date： 2023.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：オンライン   Country：Japan  

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MISC

  • 直方体室の固有振動

    井上尚久

    音響技術   2025.6

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 背後空気層を有する背面穿孔ハニカムの吸音特性

    井上尚久, 佐久間哲哉

    音響技術   2025.3

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • PML要素を用いた開領域音場の有限要素解析

    井上尚久, 佐久間哲哉

    騒音制御   2021.4

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 低周波領域における家屋の音響透過現象

    井上尚久, 佐久間哲哉

    騒音制御   2021.2

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 音響透過損失測定におけるニッシェ効果について Reviewed

    井上尚久, 佐久間哲哉

    日本音響学会誌   2020.4

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 薄型チャンバーを用いた斜入射吸音率測定法

    井上尚久, 佐久間哲哉

    騒音制御   2019.4

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 界壁部材の音響透過現象の波動数値解析

    會田祐, 井上尚久, 佐久間哲哉

    音響技術   2019.3

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • 音響管計測における多孔質材の支持条件に関する波動数値解析,

    井上尚久, 佐久間哲哉

    音響技術   2019.3

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Professional Memberships

  • 日本建築学会

  • 日本音響学会

  • 日本騒音制御工学会

Committee Memberships

  • 日本音響学会九州支部   Councilor   Domestic

    2024.4 - Present   

Research Projects

  • 音響理論および数値計算についての知見提供

    2025.4 - 2026.3

    清水建設株式会社 

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    Authorship：Coinvestigator(s)  Grant type：Other funds from industry-academia collaboration

  • Reliability improvement and application scope expansion in the laboratory measurement of sound insulation of building elements

    Grant number：21H01488  2021.4 - 2024.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Sakuma Tetsuya

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    Grant type：Scientific research funding

    Regarding the laboratory measurement method of the sound insulation performance of building materials, we first verified the measurement accuracy of sound transmission loss through test measurements and numerical analysis on reference samples, and clarified the influence of various factors in the measurement procedure and test room. Second, we incorporated a new measurement procedure for the low frequency range below 100 Hz, and verified the possibility of expanding the applicable range. Although a slight improvement in accuracy appeared under certain conditions, sufficient effect was not observed overall. Third, with the goal of improving measurement accuracy for samples with low sound insulation properties, we verified the possibility of measurement using small-area samples. As a result, It was found that depending on the positional relationship between the sound source and the sample, accuracy may be slightly improved compared to full-surface samples.

    CiNii Research

  • 遮音性能測定における多点計測に基づく入射及び透過波の分離手法の確立

    2018 - 2020

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • 音響振動連成数値解析に基づく窓システムの遮音性能予測手法及び高性能サッシの開発

    2016 - 2018

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists(A)or(B)

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    Authorship：Principal investigator  Grant type：Scientific research funding

Educational Activities

  • 音響理論演習IIや騒音環境学などの講義で主に音の物理的に取り扱いに関する理論の講義を担当。大学院講義の計算音響学では，音のコンピュータ・シミュレーションの手法論を講じ，音響理論を広くデザインに応用するステップを解説する。

Class subject

  • 計算音響学

    2024.12 - 2025.2   Winter quarter

  • 音響実験Ⅱ

    2024.10 - 2025.3   Second semester

  • 卒業研究Ⅱ

    2024.10 - 2025.3   Second semester

  • 課題協学

    2024.10 - 2025.3   Second semester

  • 音響理論演習Ⅱ（2020年度以降入学者対象）

    2024.10 - 2024.12   Fall quarter

  • デザイン・ケーススタディⅠ

    2024.6 - 2024.8   Summer quarter

  • 卒業研究Ⅰ

    2024.4 - 2024.9   First semester

  • デザインリテラシー基礎

    2024.4 - 2024.6   Spring quarter

  • 騒音環境学

    2024.4 - 2024.6   Spring quarter

  • 計算音響学

    2023.12 - 2024.2   Winter quarter

  • 音響実験Ⅱ

    2023.10 - 2024.3   Second semester

  • 音響理論演習2

    2023.10 - 2023.12   Fall quarter

  • 音響実験Ⅰ（2019年度以前入学者対象）

    2023.4 - 2023.9   First semester

  • 音響実験Ⅰ（2020年度以降入学者対象）

    2023.4 - 2023.6   Spring quarter

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Other educational activity and Special note

  • 2024  Class Teacher  学部

  • 2024  Class Teacher  音響設計コース2024年度入学クラス担任