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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorBreed, Henry E.
dc.contributorCarlson, A. Bruce, 1937-
dc.contributorGisser, David G.
dc.contributorPark, John N.
dc.contributor.authorCabot, Richard C.
dc.date.accessioned2021-11-03T08:55:14Z
dc.date.available2021-11-03T08:55:14Z
dc.date.created2017-11-28T17:59:45Z
dc.date.issued1977-05
dc.identifier.urihttps://hdl.handle.net/20.500.13015/2096
dc.descriptionMay 1977
dc.descriptionSchool of Engineering
dc.description.abstractThe real source localization performance of 11 listeners is studied. Models for the localization error and variability as a function of source direction and parameters are fitted to the data. Special consideration is given to the effects of front-rear confusion and its dependence on interaural amplitude and phase difference cues. Phantom image formation in the diamondand rectangular forms of quadraphony is investigated. Models for the localization as a function of stimulus parameters and interspeaker differences are fitted to the experimental data. The implications of these findings on sound reproduction systems are considered.
dc.description.abstractA detailed analysis is done on all test results using circular and linear statistical methods. Previously unavailable covariance and correlation measures for wrapped normal distributions on the circle are derived. Their validity is verified using MonteCarlo simulation methods. The linear analysis methods are included in the simulation allowing comparisonsbetween the linear and circular approaches. A FORTRAN program is written to aid in data analysis, providing outputs which are ideally suited for sound localization research.
dc.description.abstractSide quadrant phantoms in rectangular quadraphony were very unstable and ambiguous. Back side quadrant phantoms in the diamond system exhibited an excessive amountof front-rear confusion. These, and other inadequacies of current quadraphonic systems, are described and possible solutions are discussed. Different solutions are required depending upon the type of effect desired. Surround sound or antiphonal music requires at least six channels for accurate formation of phantoms around a listener. Although ambience effects cannot reliably be produced with either quadraphonic system, additional channels are not required. Simple changes in speaker placement are all that is---required, possibly enabling the use of fewer than four channels. A novel method of producing ambience effects, yet retaining stable frontal phantoms, is suggested which only requires three transmission and reproducing channels.
dc.description.abstractA system for efficiently running sound localization experiments is described. stimulus parameters are programmedonto plastic cards which then automatically adjust the apparatus to present that stimulus. This method allows easy randomization of stimuli and minimizes the time required to present consecutive sounds. An additional feature of the system is a device which tracks head rotation with no sUbject discomfort or inconvenience. The apparatus is used to study humansound loca.lization with special attention to localization in multichannel sound reproduction systems. Future experiments which are possible with the above apparatus are suggested. Modifications to the above apparatus to extend its capabilities and speed are described.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectElectrical engineering
dc.titleReal and phantom image localization in multichannel sound reproduction
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid178699
dc.digitool.pid178700
dc.digitool.pid178701
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreePhD
dc.relation.departmentDept. of Electrical, Computer, and Systems Engineering


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