A nordic round robin test on hearing protectors. The influence of the sound field on measured REAT attenuation

Acta Acustica united with Acustica

Volumn 90, Issue 5, 2004, Pages 838-846

  Poulsen, Torben ^a   Hagerman, Björn ^b  

^a TECHNICAL UNIVERSITY OF DENMARK   (Denmark)

^b KAROLINSKA INSTITUTE   (Sweden)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC FIELDS; ACOUSTIC NOISE; ACOUSTIC WAVES; ATTENUATION; HEARING AIDS; MICROPHONES; STANDARDS; TESTING; THRESHOLD LOGIC;

EAR CANALS; HEARING PROTECTORS; SOUND SOURCES; TETRAHEDRON;

EAR PROTECTORS;

EID: 6344280220     PISSN: 16101928     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (12)

1. ISO-4869-1: Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation. International Organization for Standardization, Geneva, 1990.
2. ANSI-S12.6: Methods for measuring the real-ear attenuation of hearing protectors. American National Standards Institute, 1997.
3. AS/NZS-1270: Acoustics - Method for measurement of the real-ear attenuation of hearing protectors. Standards Australia and Standards New Zealand, 1998.
4. N. S. Jensen, T. Poulsen: On the sound field requirements in the hearing protector standard ISO 4869-1. Acustica 85 (1999) 825-831.
5. H. Olsen, B. Hagerman: Directivity of different hearing aid microphone locations. International Journal of Audiology 41 (2002) 48-56.
6. E. A. G. Shaw, M. M. Vaillancourt: Transformation of sound-pressure level from the free field to the eardrum presented in numerical form. J. Acoust. Soc. Am. 78 (1985) 1120-1123.
7. B. Hagerman et al.: Ear muff performance in impulsive noise as a function of angle of incidence. Acustica - Acta Acustica 82 (1996) 763-771.
8. G. S. Robinson, D. W. Mauney, J. G. Casali: Sound-field diffusivity and reverberation effects on the real-ear attenuation of hearing protectors with implications for testing standards. Noise Control Engineering Journal 40 (1993) 199-210.
9. G. S. Robinson, D. W. Mauney, J. G. Casali: Earmuff real-ear attenuation at threshold (REAT) in sound fields with differing diffusivity and reverberation characteristics. Inter Noise 1992, Toronto, 1992, 267-272.
10. E. Svensson, A. Olofsson: Results of measurement of hearing protectors depending on realization of sound field. InterNoise, International Conference on Noise Control Engineering, Acoustical Society of Sweden, Göteborg, 1990, 1105-1108.
11. E. Svensson, A. Olofsson: Results of measurements of hearing protectors depending on the realization of sound field. Noise and Man, Nice, 1993, 131-133.
12. T. Poulsen: Sound fields for hearing protector tests. Sixth International Congress on Sound and Vibration, Copenhagen, Denmark, 1999, 1059-1066.