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Technical Papers and Presentations 2012

Estimation of the absorption coefficient using the transfer matrix method

Kunikazu Hirosawa
Journal of INCE/J, 36(4), 280-285 (2012)

Measurement of the normal absorption coefficient in a free field

Hiroshi Nakagawa, Kunikazu Hirosawa
Journal of INCE/J, 36(4), 286-291 (2012)

Estimation of the tortuosity, the viscous and the thermal characteristic lengths of porous materials

Kunikazu Hirosawa and Koji Takahashi
Proc. Autumn Meet. Acoust Soc. Jpn., (2012.9)

Development of Aeroacoustic Noise Measurement Technique Using New
Beamforming System - The Study of Aerodynamic Noise No.5 -

Kenichi Hirose;Yukitaka Ura;Hitoshi Kitsunai;Hisashi Tanaka;Yusaku
Fujita;Natsu Tanaka;Kazuhiro Takashima

Application of a near-field acoustic holography to the interior noise
analysis of a railway vehicle

Takuma KURAMITSU, Hirohisa KOIKE, Katsuya YAMAMOTO, Mineyuki ASAHINA