Design of the Element Interior with Betawi Culture Ornaments Made of Portable Diffusor for Interior Acoustics and Aesthetics

: The results of Betawi culture need to be preserved, developed and interpreted as a legacy of Indonesian cultural wealth that has high aesthetic value. Interior elements are part of building space, also need to be processed aesthetically. The purpose of this study was to develop ornaments of Betawi culture that are applied to interior elements by using portable diffusion as an acoustic function and enhance cultural aesthetics in the interior. Previous research was only about designing portable acoustic diffuses and space decorations. The method used in this study is the method of distributing the functions of quality and a positive design. The positive design process has explored the application of creative concepts, by considering love and charity, for the design process. Benefits in the form of interior design results, for now, long-term and short-term happiness aspirations, and can direct someone to behave well. The design of interior elements with Betawi cultural ornaments made of portable diffuses for acoustic and aesthetic interiors. Interior design needs to consider the function, happiness of the user, and preserve the wealth of cultural results.