The Acoustical Society of Japan (ASJ) is a professional organization dedicated to the study and advancement of acoustics. Founded in 1948, it promotes research, education, and collaboration among scientists and engineers in the field of acoustics. The society organizes conferences, publishes journals, and provides resources for its members to share knowledge and innovations. ASJ also plays a significant role in fostering international cooperation in acoustics. It collaborates with other organizations, such as the Acoustical Society of America and the International Commission for Acoustics, to enhance global understanding of acoustical science and technology.