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[Japanese] |
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Thermal-acoustic clay brick production with added charcoal for use in Thailand"
Construction and Building Materials，Vol. 255，Article number 119376，September 2020 Authors：Siwat Lawanwadeekul, Toru Otsuru, Reiji Tomiku, Nishiguchi Hiroyasu |
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Applying the ensemble averaging method with a pressure–velocity sensor to measure sound absorption characteristics of porous clay bricks"
Applied Acoustics，Vol. 164，Article number 107250，July 2020 Authors：Siwat Lawanwadeekul, Toru Otsuru, Reiji Tomiku, Nishiguchi Hiroyasu, Ippei Eto, Daiki Matsuoka and Ryota Yoshimoto |
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Investigating the practicability of an ensemble averaging method for measuring sound absorption and surface normal impedance"
Applied Acoustics，Vol. 156，pp.166-175，December 2019 Authors：Noriaki Sakamoto, Toru Otsuru, Reiji Tomiku, Ippei Eto, Daiki Matsuoka and Ryota Yoshimoto |
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Flanking floor impact sound insulation in cross laminated timber model building for experiment"
Journal of Physics : Conference Series，Vol. 1075 (2018)，Article number 012023 Authors：Atsushi Hiramitsu, Toru Otsuru, Reiji Tomiku and Koji Harada |
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A general description of measurement method for sound absorption and surface impedance of materials using ensemble averaging"
Journal of Physics : Conference Series，Vol. 1075 (2018)，Article number 012069 Authors：Noriaki Sakamoto, Toru Otsuru, Reiji Tomiku and Saki Yamauchi |
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Reproducibility of sound absorption and surface impedance of materials measured in a reverberation room using ensemble averaging technique with a pressure-velocity sensor and improved calibration"
Applied Acoustics，Vol. 142，pp.87-94，December 2018 Authors：Noriaki Sakamoto, Toru Otsuru, Reiji Tomiku and Saki Yamauchi |
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A fundamental investigation on acoustic properties of porous mortar boards"
Cement Science and Concrete Technology，Vol. 71，No. 1，pp.704-710，March 2018 Authors：Makoto YAMAGUCHI, Shintaro MORISHIMA, Reiji TOMIKU and Noriko OKAMOTO |
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Development of construction condition management system by absorption characteristics measurement of building materials"
AIJ Journal of Technology and Design，Vol. 23，No. 54，pp.517-520，June 2017 Authors：Noriko OKAMOTO, Toru OTSURU and Reiji TOMIKU |
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Sound absorption deviation measured using pressure–velocity sensors by ensemble averaging technique under different relative humidity conditions"
Applied Acoustics, Vol. 122，pp.121-127，July 2017 Authors：Toru Otsuru, Reiji Tomiku, Noriko Okamoto and Saki Yamauchi |
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Influences of kind of fine aggregate and specimen thickness on sound absorption property of porous mortar"
Cement Science and Concrete Technology，Vol. 70，No. 1，pp.564-571，March 2017 Authors：Takeyuki NAGATO, Makoto YAMAGUCHI, Reiji TOMIKU and Noriko OKAMOTO |
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A synthesized boundary condition for wave-based room acoustics simulations using ensemble averaged impedance measured in-situ"
Journal of Acoustical Society of America，Vol. 140，No. 4，pp.XX-XX，November 2016 Authors：Toru Otsuru, Reiji Tomiku, Noriko Okamoto, Sakura Saigo and Saki Yamauchi |
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Finite element sound field analysis for investigation on measurement mechanism of reverberation time in non-diffuse sound field"
Journal of Acoustical Society of America，Vol. 140，No. 4，pp.XX-XX，November 2016 Authors：Reiji Tomiku, Toru Otsuru, Noriko Okamoto, Takeshi Okuzono and Youtarou Kimura |
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Uncertainty examination of ensemble averaging method for sound absorption of materials in a reverberation room"
Acoustical Science and Technology，Vol. 37，No. 3，pp.129-132，May 2016 Authors：Toru Otsuru, Reiji, Tomiku, Noriko Okamoto, Emi Ueda and Asami Nakamura |
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Influence of particle size of fine aggregate and void ratio on sound absorption property of porous mortar"
Cement Science and Concrete Technology，Vol. 69，No. 1，pp.718-724，March 2016 Authors：Makoto YAMAGUCHI, Reiji TOMIKU and Noriko OKAMOTO |
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Applicability of an explicit time-domain finite-element method on room acoustics simulation"
Acoustical Science and Technology，Vol. 36，No. 4，pp.377-380，April 2015 Authors：Takeshi Okuzono, Toru Otsuru and Kimihiro Sakagami |
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An explicit time-domain finite element method for room acoustics simulations: Comparison of the performance with implicit methods"
Applied Acoustics，Vol. 104，pp.76-84，March 2016 Authors：Takeshi Okuzono, Takumi Yoshida, Kimihiro Sakagami and Toru Otsuru |
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Functional properties of porous mortar for being used as a multi-Functional interior material"
Cement Science and Concrete Technology，Vol. 68，No. 1，pp.545-552，March 2015 Authors：Makoto YAMAGUCHI, Kiyoshi MURAKAMI, Reiji TOMIKU and Noriko OKAMOTO |
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Application of an in-situ measurement method using ensemble averaging technique to material development"
AIJ Journal of Technology and Design，Vol. 21，No. 47，pp.167-170，February 2015 Authors：Reiji TOMIKU, Noriko OKAMOTO, Toru OTSURU, Takaaki KAMIMIZU and Makoto YAMAGUCHI |
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A finite-element method using dispersion reduced spline elements for room acoustics simulation"
Applied Acoustics, Vol. 79，pp.1-8，May 2014 Authors：Takeshi Okuzono, Toru Otsuru, Reiji Tomiku and Noriko Okamoto |
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Acoustic Absorption Characteristics of Perforated Thin Plate with Air Jets and Cavity”
Open Journal of Fluid Dynamics，Vol. 5，pp.1-9，March 2015 Authors：Hiromitsu Hamakawa, Hiroki Matsuoka, Taiki Yamai, Kenta Asakura, Toru Otsuru, Reiji Tomiku, Eru Kurihara, Hidechito Hayashi and Eiichi Nishida |
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Application of In-Situ Method for Measuring Sound Absorption Coefficient of Direct Piercing Carved Wood Panel with Daun Sireh Motif”
Applied Mechanics and Materials，Vol. 471，pp.273-278，December 2013 Authors：Mohd Zamri Bin Jusoh, Mohamad Ngasri Dimon, Nazli Bin Che Din, Toru Otsuru and You Kok Yeow |
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Reproductibility and applicability of ensemble averaged surface normal impedance of materials using an in-situ technique"
Acoustics Australia, Vol. 41, No. 3, pp.207-212, December 2013 Authors：Nazli Bin Che Din, Toru Osturu, Reiji Tomiku, Noriko Okamoto and Kusno Asniawaty |
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Dispersion-reduced spline acoustic finite elements for frequency-domain analysis"
Acoustical Science and Technology, Vol. 34, No. 3, pp.221-224, March 2013 Authors：Takeshi Okuzono, Toru Otsuru, Reiji Tomiku and Noriko Okamoto |
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The effect of humidity on the stability of pressure-velocity sensors-A measurement method of absorption characteristics of building materials by using ensemble averaging-"
AIJ Journal of Technology and Design，Vol. 19，No. 41，pp.179-184，February 2013 Authors：Authors: Asniawaty Kusno, Toru OTSURU, Reiji TOMIKU, Noriko OKAMOTO and Nazli Bin Che Din |
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Application of modified integration rule to time-domain finite-element acoustic simulation of rooms"
Journal of Acoustical Society of America，Vol. 132，No. 2，pp.804-813，June 2012 Authors：Takeshi Okuzono, Toru Otsuru, Reiji Tomiku and Noriko Okamoto |
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Practical subsystems to identify room dimensions and material surfaces using photograph images for room acoustic simulations"
AIJ Journal of Technology and Design, Vol. 18，No. 39，pp.601-606，June 2012 Authors: Musli Nizam Bin Yahya, Toru OTSURU, Reiji TOMIKU, Takeshi OKUZONO, Toshiki NAGASAWA and Tomohiro ODA |
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Applications of large-scale finite element sound field analysis onto a music hall using ensemble averaged surface normal impedance"
Journal of Acoustical Society of America，Vol. 131，No. 2，pp.XX-XX，April 2012 Authors：Toru Otsuru, Reiji Tomiku, Noriko Okamoto, Takeshi Okuzono and Kusno Asniawaty |
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Measurement method with a pressure-velocity sensor for measuring surface normal impedance of materials using ensemble averaging: Comparison with other methods and its geometrical configuration"
Acoustical Science and Technology, Vol. 33, No. 2, pp.86-95, March 2012 Authors：Nazli Bin Che Din, Toru Otsuru, Reiji Tomiku, Noriko Okamoto and Kusno Asniawaty |
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Ensemble averaged surface normal impedance measurement method in a reverberation room"
Acoustical Science and Technology, Vol. 32, No. 2, pp.69-72, March 2011 Authors：Toru Otsuru, Reiji Tomiku, Noriko Okamoto, Kusno Asniawaty and Nazli Bin Che Din |
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Fundamental accuracy of time domain finite element method for sound-field analysis of rooms"
Applied Acoustics, Vol. 71，No. 10, pp.940-946, October 2010 Authors：Takeshi Okuzono, Toru Otsuru, Reiji Tomiku and Noriko Okamoto |
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Ensemble averaged surface normal impedance of material using an in-situ technique: Preliminary study using boundary element method"
Journal of Acoustical Society of America，Vol. 125，No. 6，pp.XX-XX，April 2009 Authors：Toru Otsuru, Reiji Tomiku, Nazli Bin Che Din, Noriko Okamoto and Masahiko Murakami |
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Sound field analysis of rooms by time domain finite element method with an iterative method"
Journal of Environmental Engineering(Transactions of AIJ)，Vol. 73，No. 628，pp.701-706，June 2008 Authors：Takeshi OKUZONO, Toru OTSURU, Noriko OKAMOTO and Reiji TOMIKU |
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Numerical analysis of large-scale sound fields using iterative methods part II: application of Krylov subspace methods to finite element analysis"
Journal of Computational Acoustics, Vol. 15，No. 4，pp.473-493，2007 Authors：Noriko Okamoto, Reiji Tomiku, Toru Otsuru and Yosuke Yasuda |
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Direct and modal frequency response analysis of sound fields in small rooms by finite element method"
Journal of Acoustical Society of America，Vol. 123，No. 5，pp.XX-XX，May 2008 Authors：Reiji Tomiku, Toru Otsuru, Noriko Okamoto and Yuka Kurogi |
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Application of Krylov subspace methods to finite element sound field analysis -Numerical analysis of large-scale sound fields using iterative solvers partII-"
Journal of Environmental Engineering(Transactions of AIJ)，Vol. 71，No. 610，pp.11-18，December 2006 Authors：Noriko OKAMOTO, Yosuke YASUDA, Toru OTSURU and Reiji TOMIKU |
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Comparison of sound fields in rooms computed by finite‐element method and by cone beam method"
Journal of Acoustical Society of America，Vol. 120，No. 5，pp.XX-XX，October 2006 Authors：Noriko Okamoto, Toru Otsuru, Reiji Tomiku, Takeshi Okuzono, Kouta Isobe and Hiroshi Furuya |
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Applications of large-scale finite-element sound-field analysis utilizing Architectural Institute of Japan-benchmark platform"
Journal of Acoustical Society of America，Vol. 120，No. 5，pp.XX-XX，October 2006 Authors：Toru Otsuru, Noriko Okamoto and Takeshi Okuzono |
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A study on improvements of sound environment in an ICU"
AIJ Journal of Technology and Design，Vol. 12，No. 23，pp.187-190，June 2006 Authors：Miki TOYOMASU and Toru OTSURU |
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Convergence of COCG method applied to finite element sound field analysis of rooms"
Transactions of JSCES, Vol. 2005，No.20050027, September 2005 Authors：Noriko OKAMOTO, Toru OTSURU, Reiji TOMIKU and Seiji FUJINO |
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In situ measurements of surface impedance and absorption coefficients of porous materials using two microphones and ambient noise"
Applied Acoustics, Vol. 66, No. 7, pp.845-865, July 2005 Authors：Yasuo Takahashi, Toru Otsuru and Reiji Tomiku |
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Constructing a database of computational methods for environmental acoustics"
Acoustical Science and Technology，Vol. 26，No. 2，pp.221-224，March 2005 Authors：Toru Otsuru, Tetsuya Sakuma and Shinichi Sakamoto |
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Use of finite element method for comparison of sound field diffuseness in reverberation rooms with and without absorption materials"
Acoustical Science and Technology，Vol. 26，No. 2，pp.225-228，March 2005 Authors：Reiji Tomiku, Toru Otsuru, Daisuke Azuma and Yasuo Takahashi |
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A study on acoustic environment at waiting areas in hospitals"
Journal of Environmental Engineering(Transactions of AIJ)，Vol. 69，No. 584，pp.9-16，October 2004 Authors：Miki TOYOMASU, Toru OTSURU, Yuki. UCHINOURA, Noriko OKAMOTO and Reiji TOMIKU |
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In situ Measurements of Absorption Characteristics Using Two Microphones and Environmental "Anonymous" Noise"
Acoustical Science and Technology, Vol. 24，No. 6, pp.382-385, 2003 Authors：Yasuo Takahashi, Toru Otsuru and Reiji Tomiku |
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Finite Element Sound Field Analysis of Diffuseness in Reverberation Rooms"
Journal of Asian Architecture and Building Engineering，Vol. 1，No. 2，pp.33-39，August 2002 Authors：Reiji Tomiku, Toru Otsuru and Yasuo Takahashi |
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Sound fields analysis in an irregular−shaped Reverberation room by Finite Element method"
Journal of Architecture, Planning and Environmental Engineering (Transactions of AIJ)，Vol. 67，No. 551，pp.9-15，January 2002 Authors：Reiji TOMIKU and Toru OTSURU |
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Basic characteristics and accuracy of acoustic element using spline function in finite element sound field analysis"
The Journal of the Acoustical Society of Japan (E)，Vol. 21，No. 2，pp.87-95，2000 Authors：Toru Otsuru and Reiji Tomiku |
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Development of multimedia educational system on architectural acoustics by using the internet"
AIJ Journal of Technology and Design，Vol. 5，No. 8，pp.159-162，June 1999 Authors：Kazutoshi FUJtMOTO，Chiaki HARUTA，Soichiro KUROKI，Takashi YANO，Toru OTSURU，Hiroshi FURUYA，Hidetoshi YAMAGISHI， Keili KAWAI |