Abstract
In Taiwan, activity centers such as school auditoriums and gymnasiums are common multi-functional spaces that are often used for performances, singing, and speeches. However, most cases are designed using only Sabine’s equation for architectural acoustics. Although that estimation formula is simple and fast, the calculation process ignores many details. Furthermore, while more accurate analysis can be obtained through acoustics simulation software, it is more complicated and time-consuming and thus is rarely used in practical design. The purpose of this study is to use machine learning to propose a predictive model of acoustic indicators as a simple evaluation tool for the architectural design and interior decoration of multi-functional activity centers. We generated 800 spaces using parametric design, adopting Odeon to obtain acoustic indicators. The machine learning model was trained with basic information of the space. We found that through GBDT and ANN algorithms, almost all acoustic indicators could be predicted within JND ± 2, and the JND of C50, C80, STI, and the distribution of SPL could reach within ±1. Through machine learning methods, we established a convenient, fast, and accurate prediction model and were able to obtain various acoustic indicators of the space without 3D-modeling or simulation software.
Highlights
Architectural acoustics is the science of studying acoustic environments in architecture.In the past, subjects of architectural acoustic research were usually concert halls, opera houses, and theaters
This study mainly focused on the material selection and placement method of the decoration surface
After ters that are automatically optimized during the model training phase, and hyperpara adjusting the hyperparameters of the model, we evaluated the model’s RMSE and the time eters that are manually set before training [36]
Summary
Architectural acoustics is the science of studying acoustic environments in architecture. Subjects of architectural acoustic research were usually concert halls, opera houses, and theaters. Good indoor acoustic environments are not limited to professional performance spaces. Architectural acoustics in non-musical professional use spaces has begun to receive attention, in spaces such as offices, libraries, multi-purpose spaces, etc. The concept of multi-functional space has grown more and more popular, especially in schools. Combining the auditorium and indoor physical activity space is a well-established design method that can maximize the use of school space and budget. Each activity in a multi-functional space has its own requirements, and acoustic design can be difficult for this kind of space [6]
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