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  • thresholds
  • The results obtained from each of the above paradigms were consistent in showing that the presence of vibration did not have a statistically significant effect on hearing thresholds. (cdc.gov)
  • octave-band
  • Our recent animal studies (chinchilla) have used a 30 HZ, 3g rms and a 20 HZ, 2g rms cage vibration in combination with continuous noise (95 dB, 0.5 kHz octave band) and impact noise (113, 119 or 125 dB peak SPL) exposure paradigms. (cdc.gov)
  • risk
  • Four studies showed that better use of hearing protection devices in HLPPs decreased the risk of hearing loss. (cdc.gov)
  • In two similar studies there was a substantial risk of hearing loss in spite of a HLPP. (cdc.gov)
  • There is the suggestion in the literature that vibration may potentate the effects of noise and may thus increase the risk of hearing loss. (cdc.gov)
  • levels
  • Results: One study of stricter legislation showed a favorable effect on noise levels. (cdc.gov)
  • Conclusions: Stricter enforcement of legislation and better implementation of HLPPs can reduce noise levels in workplaces. (cdc.gov)