AS NZS 1269.3 pdf download – Occupational noise management Part 3: Hearing protector program 3.3 Criterion peak sound pressure level, L(crit) peak The peak sound pressure level above which the provision of hearing protectors is required by legislation or by the organization’s noise policy, whichever is the lower. 3.4 Effective level (of a sound for people wearing hearing protectors) L(eff)...