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Technical Papers and Presentations 2014

Development of new impedance tube to measure normal incidence absorption coefficient for high frequency range.

Hiroshi Nakagawa, Kunikazu Hirosawa, and Koji Takahashi
Proc. Autumn Meet. Acoust. Soc. Jpn (2014.9)

Production of a reference sample for flow resistivity measurement
Part II, The dependence of flow resistivity on both porosity and
thickness of a reference sample

TAKAHASHI Koji, HIROSAWA Kunikazu, NAKAGAWA Hiroshi
Proc. Autumn Meet. Acoust. Soc. Jpn, pp1193-1194 (2014)