AbstractThis presentation introduces a didactic tool ArAc- Multibook of Architectural Acoustics (an interactive publication) whose main objective is to innovatively fill the gap in technical literature and to increase architects’ awareness about the role acoustic comfort plays in the life of human beings.The ArAc project demonstrates an innovative approach to education and professional development of architects in the area of acoustics. Professional books on architectural acoustics are aimed chiefly at readers with mathematical or technical background, usually graduates of electronics or physics faculties. Such studies have only a limited usefulness to architects, who intend not to study architectural acoustics as a separate area of knowledge, but to search for an inspiration regarding acoustically correct architectural solutions. The materials included in the multibook are to help architects in correct and unassisted solving of common and unsophisticated noise protection and interior acoustics problems. This type of knowledge is most useful in conceptual design works related to architectural acoustics, as well as in mutual understanding of different priorities that architects and acoustician working together may have.ArAc-Multibook of Architectural Acoustics is a four-language application for mobile devices (tablets, smartphones both for iOS and Android) and on website. The Multibook is the first application of this kind in the form of a acoustics manual for architects enriched with audio, image galleries, animations, instructional videos and elements of interactive infographics.