Exam Preview for 20498: Longitudinal Study of iPod Use with Field D

Longitudinal Study of iPod Use with Field Dosimetry: Getting Closer to the Truth about Risky Listening

Please note: exam questions are subject to change.

1. What are the two types of measurements described in international standards for measuring sound sources near the ear HATIS & OAEs MIRE & Manikin ANSI & ISO 2CC & Sound level meters
2. What must be taken into account when comparing sounds measured at the eardrum to damage-risk criteria? Transfer function of the outer ear The design of the headphones The manufacturer of the headphones The genre of music
3. What two factors are important in assessing risk of hearing loss? Hearing thresholds and speech discrimination Type of earphones and tempo of music Genre of music and volume control level Exposure level and duration
4. What is the core component of the new dosimetry system described ? Quest NoisePro dosimeter Etymotic Research ER-200D dosimeter Casella Sound Level Meter Phonak Cassia hearing aid
5. How long can the new dosimetry system run continuously? 1 hour 1 day 1 week 1 month
6. What percentage of listeners exceeded 100% daily noise dose (measured by dosimetry) 16.7% 32.1% 50.9% 0%
7. What was the average weekly listening time (measured by dosimetry)? 2 hours per week 14.3 hours per week 100 hours per week 20 hours per week
8. Which of the following is a true statement? A majority of iPod users are putting themselves at increased risk for hearing loss A small but substantial group of iPod users are putting themselves at increased risk for hearing loss An epidemic of hearing loss is happening from iPod use Your iPod is trying to kill you
9. What is a good method of reducing listening levels? Public awareness campaigns Educational interventions Individual counseling in the clinic All of the above
10. What is a good method of measuring listening levels? Self-reported volume control level Dosimetry measurements Probe microphone measurements All of the above