Fazenda, Bruno M., Stephenson, Matthew and Goldberg, Andrew (2015) Perceptual thresholds for the effects of room modes as a function of modal decay. The Journal of the Acoustical Society of America, 137 (3). pp. 1088-1098. ISSN 0001-4966
- Published Version
Room modes cause audible artefacts in listening environments. Modal control approaches have emerged in scientific literature over the years and, often, their performance is measured by criteria that may be perceptually unfounded. Previous research has shown modal decay as a key perceptual factor in detecting modal effects. In this work, perceptual thresholds for the effects of modes as a function of modal decay have been measured in the region between 32Hz and 250Hz. A test methodology has been developed to include modal interaction and temporal masking from musical events, which are important aspects in recreating an ecologically valid test regime. This method has been deployed in addition to artificial test stimuli traditionally used in psychometric studies, which provide unmasked, absolute thresholds. For artificial stimuli, thresholds decrease monotonically from 0.9 seconds at 32 Hz to 0.17 seconds at 200 Hz, with a knee at 63 Hz. For music stimuli, thresholds decrease monotonically from 0.51 seconds at 63 Hz to 0.12 seconds at 250 Hz. Perceptual thresholds are shown to be dependent on frequency and to a much lesser extent on level. Results presented here define absolute and practical thresholds, which are useful as perceptually relevant optimization targets for modal control methods.▼ Jump to Download Statistics
|Additional Information:||Copyright 2015 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Schools:||School of Computing and Engineering
School of Computing and Engineering > Music Technology and Production Research Group
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|Depositing User:||Matthew Stephenson|
|Date Deposited:||24 Apr 2015 13:01|
|Last Modified:||04 Nov 2015 22:26|
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