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Age-Weighted Sound Levels and Community Annoyance Response Insights

This study by Michael A. Staiano (2006) explores the intricacies of how age and sound levels impact community annoyance responses. Through public opinion polling and ambient noise surveys, the research examines the annoyance response curve, weightings, and equal-loudness contours among 18-25 year-old males and females. The analysis includes aging-related hearing loss factors such as presbycusis and noise-induced conditions, revealing expected hearing loss trends in industrial contexts. The findings highlight the minor impact of aging on annoyance variation, presenting crucial insights into noise pollution's effects on different age groups.

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Age-Weighted Sound Levels and Community Annoyance Response Insights

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  1. Age-WEIGHTEDSOUND LEVELS Michael A. Staiano 10 July 2006 STAIANO ENGINEERING, INC.

  2. ANNOYANCE RESPONSE • Public opinion polling of community annoyance • Ambient noise survey of canvassed area

  3. ANNOYANCE RESPONSE CURVE

  4. WEIGHTING CURVES

  5. EQUAL-LOUDNESS CONTOURS Pure-tone response of 18-25-yr-old men and women

  6. POPULATION PYRAMID

  7. 2006 U.S. POPULATION MEAN AGE: • Men and Women / All ages – 37 yr • Men and Women / ≥ 20 yr – 47 yr

  8. HEARING LOSS • PRESBYCUSIS—aging • NOISE-INDUCED • occupational • sociacusis (every-day life) • NOSOACUSIS—disease, trauma, ototoxic drugs

  9. EXPECTED HEARING LOSS 60-yr olds in industrial society but not exposed to workplace noise (OSHA 1983)

  10. HEARING LOSS AGE-CORRECTION CURVES Hearing threshold re 20-yr-old males

  11. AGE WEIGHTINGS

  12. SIMPLE SPECTRA

  13. OVERALL SOUND LEVELS of SIMPLE SPECTRA—1

  14. OVERALL SOUND LEVELS of SIMPLE SPECTRA—2

  15. REAL SPECTRA

  16. OVERALL SOUND LEVELS of REAL SPECTRA—1

  17. OVERALL SOUND LEVELS of REAL SPECTRA—2

  18. NATURAL SOUNDS • Natural Sources: • Birds ≥ 2 kHz • Insects – cicadas ~1 kHz – crickets ~6 kHz • Ageing filters natural sounds relative to intruding noise?

  19. CONCLUSION • A-weighting ageing error range: • 1 dB @ 40 yr • 2 dB @ 50 yr • 3 dB @ 60 yr • 4 dB @ 70 yr • Ageing relatively minor explanation for annoyance response variation

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