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Noise Induced Hearing Loss Webinar Series: Making the Case for Custom

View Course Details Please note: exam questions are subject to change.


1.  The barriers to custom hearing protection include:
  1. comfort
  2. ease of acquisition (commoditization) of over the counter solutions
  3. people are generally unaware of the benefits due to low adoption rate
  4. all of the above
2.  Shallow insertion of earplugs:
  1. has no effect on the attenuation
  2. has no effect on the frequency response
  3. is recommended for sensitive ear canals
  4. affects the attenuation and frequency response
3.  Foam earplugs:
  1. do not attenuate enough sound to be effective protection, even when inserted correctly
  2. generally provide effective protection for many recreational activities when inserted correctly, but may not provide an effective sound quality for music fans
  3. are generally too costly and hard to obtain for your average musician
  4. all of the above
4.  Filtered, non-custom earplugs
  1. generally provide better sound quality (closer to open ear) than foam earplugs
  2. provide an equivalent real ear response to a custom musician plug (+/- 2 dB across the spectrum)
  3. do not provide adequate sound isolation for music venues
  4. are cost prohibitive for most people
5.  Sound overexposure is a risk of which of the following activities if certain criteria (sound level and duration, for example) are met?
  1. portable music player use
  2. attending concerts
  3. being a musician in an orchestra
  4. all of the above
6.  Of the following, which organization has the most conservative damage risk criteria?
  1. WHO
  2. OSHA
  3. NIOSH
  4. ASHA
7.  Which of the following earplugs in situ provides a response most similar to the open ear response?
  1. Non-custom ER20
  2. foam earplug, shallow insertion
  3. Custom ER15
  4. foam earplug, deep insertion
8.  The ear canal length of custom earplugs can impact:
  1. amount of attenuation
  2. comfort
  3. both A and B
  4. none of the above
9.  Which noise-exposed population has the highest adoption rate of use of custom ear-level devices?
  1. Professional musicians
  2. Construction workers
  3. Workers in all economic sectors
  4. Live concert attendees
10.  Using the earbuds that come with a portable music player:
  1. may cause you to listen louder to overcome sound loss via slit leaks
  2. depending on ear anatomy, can cause poor sound quality
  3. can allow ambient noise to mask the signal from the music player
  4. all of the above

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