The effect of sound spatialization on responses to overlapping messages
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Authors
Campbell, James R., III
Subjects
Communications
Auditory Displays
Sound Localization
Spatialization
Overlapping Messages
Spatial Audio
Logit Regression
Cochran's Test
Auditory Displays
Sound Localization
Spatialization
Overlapping Messages
Spatial Audio
Logit Regression
Cochran's Test
Advisors
Shilling, Russell D.
Read, Robert R.
Date of Issue
2002-06
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
The purpose of this research was to determine if a spatialized headphone display would improve users' recognition accuracy when listening to more than two overlapping messages. This type of task has numerous applications in a variety of different military settings, such as aviation communications and combat information centers. Two experiments were conducted in the Advanced Auditory Displays Laboratory at the Naval Postgraduate School. The first experiment was a pilot study which was designed to identify the factors that contributed to changes in response accuracy rates. The conclusion of this effort was a decision to use a chi-squared analysis and a multivariate logit regression, which could examine the influence of several factors in addition to spatialization. Results indicated that participants accurately identified 43% of the messages in the spatialized condition, but only 17% of the messages in the non-spatialized condition. Chi-squared tests indicated a dependent relationship between accuracy and spatialization under a variety of conditions. The logit regression model confirmed these conclusions and indicated that the chance of a completely correct response was improved by approximately 30% with the use of spatialization.
Type
Thesis
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Format
xvi, 119 p. : col. ill. ;
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Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.