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Second most common cause of SNHL

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Second most common cause of SNHL

The numerical magnitude of a sound is normally expressed as the sound pressure level in ___ decibel units (dB). This gives a nominal range of 0-120 dB, with zero as the reference minimum threshold and 120 dB as the approximate threshold of pain.

An increase of __ dB within the hearing range is perceived as a doubling in loudness, a decrease of __ dB as a halving in loudness

Frequency Weighting
___ weighting is intended to approximate to the way your ears hear sounds and is denoted as ___

'A' weighting is intended to approximate to the way your ears hear sounds and is denoted as dB(A)

Damage to human hearing begins when an individual is subjected to____ exposure to continuous sound at __dBA

8-hour daily, 85

A ___ dBA increase measured by SLM is equivalent to a doubling in intensity

___ provides regulations with respect to occupational noise exposure

A noise-induced _____) is defined as:
"The reversible increase in the threshold of audibility for an ear at a given frequency following exposure to noise."

Usually measured about__ minutes after exposure

temporary threshold shift (TTS

2

will a daily exposure to sound levels that DO NOT produce a TTS result in a PTS over a worker's lifetime?

NIHL is typically:

____ with high pitch constant tinnitus
Symmetrical, but asymmetries of 15 dB are not uncommon
Low frequency thresholds are rarely poorer than __ dB
High frequency thresholds are rarely poorer than __ dB

Bilateral
40, 75