Research theme for competitive and other funds (2)：
1997 - 1998 Study on investigation of sound propagation on snow field and study on improvement method of sound information addressing
1995 - 1996 Comparison of sound propagation during the daytime with that during the nighttime
Papers (44)：
Yasuaki Okada, Tomokazu Tsuboi, Tomoki Ichikawa, Tomoaki Uemura, Koichi Yoshihisa. Comparison of sound emission models for road vehicles in Japan and European countries. ACOUSTICAL SCIENCE AND TECHNOLOGY. 2023. 44. 3. 176-185
Yasuaki Okada, Tomoki Ichikawa, Koichi Yoshihisa, Tomoaki Uemura, Miki Yonemura, Hyojin Lee, Shinichi Sakamoto, Katsuya Yamauchi. Sound power level of road vehicles running on dense asphalt pavement at various sites in Japan. ACOUSTICAL SCIENCE AND TECHNOLOGY. 2020. 41. 3. 598-606
Yasuaki Okada, Koichi Yoshihisa, Shinya Hyodo. Directivity of amplitude modulation sound around a wind turbine under actual meteorological conditions. Acoustical Science and Technology. 2019. 40. 1. 40-48
Teruo Iwase, Satoshi Sugie, Hiroyasu Kurono, Masayuki Abe, Yasuaki Okada, Koichi Yoshihisa. Sound absorption characteristic of glass and plastic bottles: Considerations of their dependences on material properties. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD. 2018. 2018-August
Yasuaki Okada, Koichi Yoshihisa, Shinichi Sakamoto. Sound power emission of road vehicles in ASJ RTN-Model 2018. Proc. of the 9th Forum Acusticum 2020. 2020. 2191-2198
Long-term measurement of residual noise in an urban area. 2016. 43-46
Study on rotor rotational speeds estimated using amplitude modulation of wind turbine noise. 2016. 19-22
OKADA Yasuaki, YOSHIHISA Koichi. Experimental Study on Radiation Characteristics of Wind Turbine Noise. 2015. 53. 329-332
Experimental study on radiation characteristics of noise generated from wind turbines. 2014. 161-164
