Modal Decay Times in Ducts and Rooms

Magalotti R, Cardinali V. Modal Decay Times in Ducts and Rooms. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10187. Available from: https://aes.org/publications/elibrary-page/?id=20320

@inproceedings{Magalotti2019_20320,
  author = {Magalotti, Roberto and Cardinali, Valentina},
  title = {{Modal Decay Times in Ducts and Rooms}},
  booktitle = {AES Convention 146},
  note = {Paper 10187},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20320}
}

TY  - CPAPER
TI  - Modal Decay Times in Ducts and Rooms
AU  - Magalotti, Roberto
AU  - Cardinali, Valentina
T2  - AES Convention 146
M1  - Paper 10187
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20320
PB  - Audio Engineering Society
LA  - en
AB  - In order to model the behavior of environments dominated by modal resonances, it is important to find the relationship between modal decay times and boundary conditions. The paper investigates this relationship in simple systems (rectangular duct and room), with a theoretical approach validated by FEM simulations. In the rectangular room, the classification of modes in axial, tangential, and oblique categories is helpful in assessing how the impedance of walls influences decay times. The results are compared to the Sabine equation for reverberation time. Some hints for exploiting experimentally the results are given.
ER  -