- Tytuł:
- Prediction of low-frequency sound field in rooms with complex-valued boundary conditions on walls
- Autorzy:
- Meissner, Mirosław
- Powiązania:
- https://bibliotekanauki.pl/articles/128275.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Poznańska. Instytut Mechaniki Stosowanej
- Tematy:
-
room acoustics
modal vibrations
room impulse response
complex wall impedance
akustyka pomieszczeń
drgania modalne
metoda wymuszeń impulsowych - Opis:
- A modal representation of a room impulse response has been used to formulate expressions for low-frequency sound field in rooms of arbitrary shape. Based on theoretical results, a simulation program has been developed to predict a sound pressure distribution and a room transfer function for rectangular enclosure having walls covered by a material of complex impedance. Calculation results have shown that changes in the wall reactance entail a substantial modification of a sound pressure distribution. Furthermore, an influence of wall reactance on the room transfer function was investigated and it was discovered that a change in a reactance sign causes a shift in frequencies of modal vibrations excited in the room.
- Źródło:
-
Vibrations in Physical Systems; 2019, 30, 1; 1-8
0860-6897 - Pojawia się w:
- Vibrations in Physical Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł