Perceptual thresholds for the effects of room modes as a function of modal decay.
Identifieur interne : 000D74 ( Main/Exploration ); précédent : 000D73; suivant : 000D75Perceptual thresholds for the effects of room modes as a function of modal decay.
Auteurs : Bruno M. Fazenda [Royaume-Uni] ; Matthew Stephenson [Royaume-Uni] ; Andrew Goldberg [Allemagne]Source :
- The Journal of the Acoustical Society of America [ 1520-8524 ] ; 2015.
Abstract
Room modes cause audible artifacts 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 32 and 250 Hz. 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 s at 32 Hz to 0.17 s at 200 Hz, with a knee at 63 Hz. For music stimuli, thresholds decrease monotonically from 0.51 s at 63 Hz to 0.12 s at 250 Hz. Perceptual thresholds are shown to be dependent on frequency and to a much lesser extent on level. The results presented here define absolute and practical thresholds, which are useful as perceptually relevant optimization targets for modal control methods.
DOI: 10.1121/1.4908217
PubMed: 25786924
Affiliations:
- Allemagne, Royaume-Uni
- Angleterre, Berlin, Grand Manchester
- Berlin, Manchester, Salford
- Université de Salford
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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 32 and 250 Hz. 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 s at 32 Hz to 0.17 s at 200 Hz, with a knee at 63 Hz. For music stimuli, thresholds decrease monotonically from 0.51 s at 63 Hz to 0.12 s at 250 Hz. Perceptual thresholds are shown to be dependent on frequency and to a much lesser extent on level. The results presented here define absolute and practical thresholds, which are useful as perceptually relevant optimization targets for modal control methods. </div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">25786924</PMID><DateCompleted><Year>2015</Year><Month>08</Month><Day>10</Day></DateCompleted><DateRevised><Year>2015</Year><Month>03</Month><Day>19</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1520-8524</ISSN><JournalIssue CitedMedium="Internet"><Volume>137</Volume><Issue>3</Issue><PubDate><Year>2015</Year><Month>Mar</Month></PubDate></JournalIssue><Title>The Journal of the Acoustical Society of America</Title><ISOAbbreviation>J Acoust Soc Am</ISOAbbreviation></Journal><ArticleTitle>Perceptual thresholds for the effects of room modes as a function of modal decay.</ArticleTitle><Pagination><MedlinePgn>1088-98</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1121/1.4908217</ELocationID><Abstract><AbstractText>Room modes cause audible artifacts 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 32 and 250 Hz. 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 s at 32 Hz to 0.17 s at 200 Hz, with a knee at 63 Hz. For music stimuli, thresholds decrease monotonically from 0.51 s at 63 Hz to 0.12 s at 250 Hz. 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Fazenda</name></region><name sortKey="Stephenson, Matthew" sort="Stephenson, Matthew" uniqKey="Stephenson M" first="Matthew" last="Stephenson">Matthew Stephenson</name></country><country name="Allemagne"><region name="Berlin"><name sortKey="Goldberg, Andrew" sort="Goldberg, Andrew" uniqKey="Goldberg A" first="Andrew" last="Goldberg">Andrew Goldberg</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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