Analysis and improvement of room acoustics below Schroeder frequency by means of the finite element method
Abstract
The subject of the present PhD Thesis is the low frequency sound field in small enclosed spaces under Schroeder frequency, and it’s goal is the elimination of the low frequency sound coloration over expanded audience areas. For this purpose, a Methodology for Acoustic Analysis with Finite Elements, which implements the technique of panel resonator sound absorbers, is proposed,. An Application Software for Acoustic Analyses with Finite Elements was developed as a tool of implementation of the Methodology. With the help of simulations of the software, the numerical accuracy of the Finite Elements in acoustic analysis was tested, and the performance of the control mechanisms of the modal resonances of enclosed sound field was studied. Finally, the methodology was applied experimentally to a case study, involving the acoustic adaptation of a sound recording and production control room. The results of the Methodology were verified and the operation of the Software was certified through the ...
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