title: Audibility of dispersion error in room acoustic finite-difference time-domain simulation in the presence of absorption of air.
abstract: The finite-difference time-domain method has gained increasing interest for room acoustic prediction use. A well-known limitation of the method is a frequency and direction dependent dispersion error. In this study, the audibility of dispersion error in the presence of air absorption is measured. The results indicate that the dispersion error in the worst-case direction of the studied scheme gets masked by the air absorption at a phase velocity error percentage of 0.28% at the frequency of 20 kHz.
authors.affiliation: Department of Computer Science, Aalto University School of Science, FI-00067 Aalto, Finland jukka.saarelma@aalto.fi, lauri.savioja@aalto.fi.
authors.forename: Jukka
authors.initials: J
authors.lastname: Saarelma
authors.affiliation: Department of Computer Science, Aalto University School of Science, FI-00067 Aalto, Finland jukka.saarelma@aalto.fi, lauri.savioja@aalto.fi.
authors.forename: Lauri
authors.initials: L
authors.lastname: Savioja