PMID- 31046364
OWN - NLM
STAT- In-Data-Review
LR  - 20190503
IS  - 1520-8524 (Electronic)
IS  - 0001-4966 (Linking)
VI  - 145
IP  - 4
DP  - 2019 Apr
TI  - Reverberation time and audibility in phased geometrical acoustics using plane or 
      spherical wave reflection coefficients.
PG  - 2681
LID - 10.1121/1.5095862 [doi]
AB  - Room acoustics parameters are typically predicted using some form of geometrical 
      acoustics for large rooms. For smaller rooms, phased geometrical acoustics
      improves results for lower frequencies. The use of a spherical wave reflection
      coefficient improves the results further, yet the exact impact on room acoustics 
      parameters is not fully known. This work predicts the reverberation time in
      medium-sized rooms (27 m(3 )< V < 300 m(3)) using phased geometrical acoustics.
      The difference between the use of plane and spherical wave reflection modeling is
      analyzed for a variety of boundary conditions, including non-uniform distribution
      of absorption. Since calculated differences are greater than the conventional
      just-noticeable-difference of 5% for reverberation time, laboratory listening
      tests are performed to confirm audibility of the modeled differences. Two narrow 
      band noise stimuli (octave bands with central frequency 125 and 250 Hz) with a
      duration of 1 s were used for comparisons of 18 acoustic scenarios by means of a 
      three-alternative forced choice method. More than half of the listeners could
      hear the differences in all 36 cases. Statistically significant results
      (chi-squared test was used) were found in two-thirds of the cases, corresponding 
      to those with longer reverberation times.
FAU - Boucher, Matthew A
AU  - Boucher MA
AD  - Division PMA, Department of Mechanical Engineering, KU Leuven, Celestijnenlaan
      300, Heverlee, 3001, Belgium.
FAU - Rychtarikova, Monika
AU  - Rychtarikova M
AD  - Faculty of Architecture, KU Leuven, Hoogstraat 51, Gent, 9000/Paleizenstraat 65, 
      Brussels, 1030, Belgium.
FAU - Zelem, Lukas
AU  - Zelem L
AD  - Department of Architecture, STU Bratislava, Radlinskeho 11, 810 05, Bratislava,
      Slovakia.
FAU - Pluymers, Bert
AU  - Pluymers B
AD  - Division PMA, Department of Mechanical Engineering, KU Leuven, Celestijnenlaan
      300, Heverlee, 3001, Belgium.
FAU - Desmet, Wim
AU  - Desmet W
AD  - Division PMA, Department of Mechanical Engineering, KU Leuven, Celestijnenlaan
      300, Heverlee, 3001, Belgium.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Acoust Soc Am
JT  - The Journal of the Acoustical Society of America
JID - 7503051
EDAT- 2019/05/03 06:00
MHDA- 2019/05/03 06:00
CRDT- 2019/05/04 06:00
PHST- 2019/05/04 06:00 [entrez]
PHST- 2019/05/03 06:00 [pubmed]
PHST- 2019/05/03 06:00 [medline]
AID - 10.1121/1.5095862 [doi]
PST - ppublish
SO  - J Acoust Soc Am. 2019 Apr;145(4):2681. doi: 10.1121/1.5095862.