1. Testing of ANR headsets;Behar;Canadian Acoustics,2001
2. ISO 4869-1. Acoustics—hearing protectors—part 1: subjective method for the measurement of sound attenuation. Geneva: International Organization for Standardization; 1990.
3. ANSI S12.6-1997. Method for measuring the real-ear attenuation of hearing protectors. Acoustical Society of America: New York; 1997.
4. Influence of physiological noise and the occlusion effect on the measurement of real-ear attenuation at threshold;Berger;Journal of Acoustical Society of America,1983
5. Enclosure for low-frequency assessment of active noise reducing circumaural headsets and hearing protectors;Ryan;Canadian Acoustics,1993