The HTL's are recorded on the employee's audiogram. A unit of measurement of frequency, expressed as cycles per second. An instrument worn by an individual that integrates the sound level exposure over a period of time. This rating is shown on the HPD packaging. Another term for sound frequency.
Higher pitches are higher frequency sounds.
Measurements of an employee's noise dose or 8-hour time weighted average sound level that is representative of the exposures of other employees in the workplace. A vibration or pressure oscillation that is detectable by the ear drum. An instrument used for the measurement of noise in sound level surveys. The low frequencies are the least affected by noise. If the high frequencies are affected, t's and p's or s's and f's may be easily confused.