| Objective evaluation of the sweet spot size in spatial sound reproduction using elevated loudspeakers. | |
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MedLine Citation:
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PMID: 20815441 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In a previous study, three crosstalk cancellation techniques were evaluated and compared under different conditions. Least-squares approximations in the frequency and time domain were evaluated along with a method based on minimum-phase decomposition and a frequency independent delay. In general, the least-squares methods outperformed the method based on the minimum-phase decomposition. However, the evaluation was only done for the best-case scenario, where the transfer functions used to design the filters correspond to the listener's transfer functions and his/her location and orientation relative to the loudspeakers. This paper presents a follow-up evaluation of the performance of the three inversion techniques when the above mentioned conditions are relaxed. A setup to measure the sweet spot of different loudspeaker arrangements is described. The sweet spot was measured for 21 different loudspeaker configurations, including two- and four-channel setups. Lateral and frontal displacement were measured along with head rotations. The setups were evaluated at different elevation angles. The results suggest that when the loudspeakers are placed at elevated positions, a wider effective area is obtained. Additionally, the two-channel configurations showed to be more robust to head misalignments than the four-channel configurations. |
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Authors:
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Yesenia Lacouture Parodi; Per Rubak |
Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 128 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-06 Completed Date: 2011-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1045-55 Citation Subset: IM |
Affiliation:
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Section of Acoustics, Department of Electronic Systems, Aalborg University, Frederik Bajers Vej 7B5, 9220 Aalborg, Denmark. ylp@es.aau.dk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustics
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instrumentation* Amplifiers, Electronic* Equipment Design Head Movements Humans Least-Squares Analysis Models, Theoretical* Rotation Sound* Sound Localization Sound Spectrography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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