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Effects Of Cardiovascular Exercise On The Selection Of Preferred Listening Levels Using Ipods, Jessica Leigh Ann Newman

Doctoral Dissertations

The present project evaluated the effect of cardiovascular exercise on the selection of preferred listening levels using iPods. The participants in this study included 15 Louisiana Tech University students ranging in age from 19 and 30 years. The inclusion criteria for participants was as follows: (1) normal hearing sensitivity; (2) no known neurological, cognitive, or otologic impairment; (3) removal from excessive noise for at least 48 hours prior to testing; and (4) endurance in running on a treadmill for the duration of ten minutes.

Pre-test audiometric thresholds and distortion product otoacoustic emissions (DPOAEs) were obtained in a sound treated booth. …

Sound Pressure Levels Measured At Preferred Listening Levels Of Ipod Users Using Knowles Electronic Manikin For Acoustical Research, Ahmad Brandelle Alexander

Doctoral Dissertations

The present study (1) examined the sound pressure levels (SPLs) of iPod users and nonusers at preferred listening levels measured on Knowles Electronic Manikin for Acoustical Research (KEMAR), and (2) determined if those SPLs exceeded the OSHA standards for acceptable hearing levels. Forty subjects, divided into one of the four following groups participated in this study: (1) inexperienced males, (2) experienced males, (3) inexperienced females, or (4) experienced females. Each participant was asked to set the music stimuli to their preferred listening level while in the presence of background noise, simulating a real world listening environment. SPL values were then …