The Architectural Institute of Japan is currently establishing an acoustic standard and its design guidelines of sound absorption to ensure a basic sound environment for a variety of architectural spaces. In Japan, there is little awareness of the need for room acoustic design in spaces other than performance spaces, such as concert halls and theaters. Consequently, many public spaces—including train stations, airports, childcare centers, and educational facilities—often suffer from insufficient sound absorption. To achieve a basic sound environment that ensures comfort, functionality, and safety in architectural spaces, the sound absorption design must be promoted. Therefore, it is considered important to develop and publicize the standard and design guidelines for sound absorption. In 2020, the Architectural Institute of Japan formed the “Working Group on Standard and Design Guidelines for Sound Absorption” to address this issue. This report provides an overview of the Japanese standard and design guidelines for sound absorption that are currently being discussed by the working group. The report is divided into three parts as follows: Part 1: Purpose and framework, Part 2: Recommended criteria for general rooms, and Part 3: Recommended criteria for rooms intended for speech and communication. This part presents an overview of the purpose and framework.
Hanyu et al. (Wed,) studied this question.