Modeliranje zvočnega polja v majhnem prostoru

Kolarič, Juš (author), Prezelj, Jurij (mentor)

Zasnova glasbenega studia zahteva poznavanje akustične karakteristike prostora. Pri tem ima velik vpliv odmevni čas T_60, s katerim potrdimo ustrezno funkcionalnost prostora. Rezultati narejeni z meritvami in izračuni dajejo dobro osnovo za nadaljnje konstruiranje prostora. Odmevni čas sobe smo izračunali z enačbami Sabina in Eyringa, s simulacijo impulznega odziva v programu Comsol multiphysics ter z meritvami zvočnega tlaka pri delovanju belega šuma, poka balona in ploska z rokami. Na podlagi rezultatov pa lahko napovemo ukrepe, ki bi bili potrebni za zmanjšanje odmevnega časa.

• Language: Slovenian
• Keywords: zvok, stojno valovanje, zvočno polje, direktni in odbiti zvok, odmevni čas T60, absorpcijski koeficient, numerična metoda končnih elementov, mreženje
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-95510
• Publication date in RUL: 20.09.2017

Secondary language

• Language: English
• Title: Modeling the sound field in a small space

Abstract

In order to design a music studio, it is necessary to know the acoustic characteristics of the room. Reverberation timeT_60, with which we confirm the appropriate functionality of the room plays a big role in this. The results obtained with measurements and calculations provide a good base for further space construction. Reverberation time of the room was calculated with Sabina and Eyringa equations, with simulation of the impulse response in comsol multiphysics software and by measuring the sound pressure when white noise is present, when bursting a balloon and when clapping with hands. Based on the results we can predict the actions necessary for reduction of reverberation time.

• Keywords: sound, standing wave, direct and reflected sound, reverberation time T60, absorption coefficient, the finite element method, meshing