Development of a dynamic simulator of landscape and auditory environments for the improvement of amenity-assessment procdure

作为海岸空间美学设计的有力工具之一，波浪及其声音是构成空间舒适性的重要因素，基于计算机图形学技术并结合声音处理系统，开发了景观和听觉环境的动态模拟器。为了在工作站(20MIPS，32Mb)上实现该模拟器系统，开发和集成了几个高效的软件，以减少计算时间和存储域。软件上最突出的改进之一就是巧妙地引入了凸起映射CG技术和一种简化的破碎波场评估方法，从而对破碎波的表达技术进行了改进。通过在香川县津田海岸人工海滩建设的具体规划中的应用，验证了该系统的有效性和适用性。

As one of powerful tools for the esthetic design in coastal space, where waves and their sounds have significant roles as factors constituting amenity of the space, a dynamic simulator of landscape and auditory environments has been developed, being based on Computer-Graphics techniques and incorporating a sound-processing system. To realize the simulator system on a work-station(20MIPS, 32Mb), several efficient softwares have been developed and integrated to reduce computational time and storage domain. One of the most outstanding improvement in software is made on the technique for breaking-wave expression by introducing ingeniously a bump-mapping CG technique with a simplified evaluation method of breaking wave field. The validity and applicability of the present system have been confirmed through an application to a specific plan of construction of artificial beaches in Tsuda coast, Kagawa Prefecture.