Optimization of the duration of an echogram resulting from computer simulation of the acoustic properties of a room

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Authors

  • R. GOŁĘBIEWSKI Institute of Acoustics, Adam Mickiewicz University, Poland
  • E. HOJAN Institute of Acoustics, Adam Mickiewicz University, Poland
  • M. WOJTCZAK Institute of Acoustics, Adam Mickiewicz University, Poland
  • P. PĘKALA Institute of Acoustics, Adam Mickiewicz University, Poland

Abstract

The authors of this paper investigated the ways to decrease the time of calculating an echogram in the computer simulation of the distribution of the sound field in a room. The authors emphasize the existence of a limiting moment tst up to which the simulation must be completed. The remaining part of the echogram may be treated as a stochastic amplitude (temporal distribution). The authors related the moment tst to the reverberation time RT and the early decay time, EDT, of a room.

References

[1] A.C. GADE, Acoustical survey of eleven European Halls - a basis for discussion of hall in Denmark, Raport No. 44 (1989) from The Acoustical Laboratory Technical University of Denmark, Building 352, DK 2800 Lyngby.

[2] E. HOJAN, CH. POSSELT, Prediction of the early part of echograms indispensable in computer simulation in rooms, Archives of Acoustic, 16, 2, 295-303 (1991).

[3] P. LEHMAN, Uber die Ermittlung Roumakustischer Subjektiven Beurteilungen der Horsamkeit D83, Berlin 1976.

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