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Journal Article

Perception of Modal Distribution Metrics in Critical Listening Spaces—Dependence on Room Aspect Ratios

Authors: Fazenda, Bruno M.; Avis, Mark R.; Davies, William J.

Journal of the Audio Engineering Society · Volume 53 · Issue 12 · pp. 1128–1141 · December 2005

Abstract

The subjective significance of two general types of metrics used to describe the “quality” of a room based on its aspect ratio are compared. Tests were carried out to evaluate differences between three virtual rooms that score extreme classifications in each of the metrics. The results of the tests indicate that room aspect ratios do have some effect on the perception of the modal distribution, but the effect is very much dependent on the frequency content of the original signal. This indicates that a room that scores well using a certain metric may still suffer from problems if the frequency content of the driving signal matches one particularly strong modal artifact. More significantly, the results of these tests imply that attempts to rank critical listening spaces based on modal distribution metrics are likely to be highly misleading; and the derivation of difference limen, which would be required for useful comparison, has been shown in practice to be highly problematic and perhaps meaningless.

Details

Publication
Journal of the Audio Engineering Society
Volume
53
Issue
12
Pages
1128–1141
Publication date
December 6, 2005
Affiliation
University of Glamorgan, Wales, UK; University of Salford, Salford, UK (See document for exact affiliation information.)
Type
Journal Article