ANSI/ASA S12.42 : 2010

1 Scope
2 Normative references
3 Terms and definitions
4 Applicability of the test methods
5 Requirements for product samples and band force
6 Acoustic test fixture(s) - continuous and impulsive
   noise methods
7 Continuous noise methods - MIRE test subjects
8 Continuous noise methods - facilities and
   instrumentation (MIRE and ATF)
9 Continuous noise methods - test procedures and
   data reduction (MIRE and ATF)
10 Impulsive noise methods - facilities and
   instrumentation (ATF)
11 Impulsive noise methods - test procedures and data
   reduction (ATF)
Annex A (normative) - Procedure for measurement of
        the band force of semi-insert devices
Annex B (informative) - Acoustic Test Fixtures (ATF) -
        general information
Annex C (normative) - Procedure for measuring head
        dimensions
Annex D (informative) - Methods for mounting MIRE
        microphones in the ear
Annex E (normative) - Procedure for MIRE AIL measurement
        of ANR deep-insert custom-molded earplugs
Annex F (informative) - Uncertainty for continuous noise
        methods
Annex G (informative) - Procedure for generation of
        impulsive noise
Annex H (informative) - Example MATLAB[R] code for computing
        impulsive peak insertion loss
Annex I (informative) - Uncertainty for impulsive noise
        method
Bibliography

Gives methods for the measurement of the insertion loss of hearing protection devices in specified continuous and impulsive noise environments.