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Harmful Noise Levels

National Association of Future Doctors of Audiology (NAFDA). Harmful Noise Levels. Exposure to Musicians. Rock concerts Marching bands Music from a player's own instrument or other’s instruments. Exposure to Musicians. Exposure to Musicians.

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Harmful Noise Levels

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  1. National Association of Future Doctors of Audiology (NAFDA) Harmful Noise Levels

  2. Exposure to Musicians • Rock concerts • Marching bands • Music from a player's own instrument or other’s instruments

  3. Exposure to Musicians

  4. Exposure to Musicians Continuous sound dBA Unprotected permissible exposure time • 85 8 hours • 88 4 hours • 91 2 hours • 94 1 hour • 97 30 minutes • 100 15 minutes • 103 7.5 minutes • 106 < 4 minutes • 109 < 2 minutes • 112 ~1 minutes • 115 ~30 seconds

  5. Hearing in General From Sound to Cilia

  6. Auditory Pathology • Sensorineural Hearing loss • Damage to Cochlea or beyond • Outer hair cells in the cochlea are damaged Conductive Sensorineural

  7. Threshold Shift • Temporary threshold shift • Permanent threshold shift • Tinnitus

  8. Symptoms of Hearing Loss • Tinnitus • Trouble hearing in background noise • Miss high frequency sounds • Reduced ability to hear at a distance • Reduced ability to localize sounds

  9. Audiologic Evaluation includes: • Case History • Otoscopic Examination • Tympanometry • Otoacoustic Emissions • Pure Tone Audiometry

  10. v

  11. Functional Limitations Miss high frequency sounds Consonant sounds

  12. Hearing Loss Simulation • Noise induced hearing loss • Mild high frequency • Speech in quiet • Speech in noise • Moderately-severe high frequency • Speech in quiet • Speech in noise

  13. Musician’s Earplugs • High fidelity • Three types of attenuator buttons • ER-9 • ER-15 • ER-25 • Can change buttons for different listening situations

  14. Musician’s Earplugs

  15. Other Types of Hearing Protection Silicone rubber earplugs Foam earplugs

  16. Hearing Screenings • XX • XX • XX • XX

  17. Resources • asha.org • etymotic.com • www.cdc.gov/niosh Audra Woods- aw365402@ohio.edu Elizabeth Schnabel- es213499@ohio.edu Ryan Pratt- rp194100@ohio.edu

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