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ČSN is a protected designation of Czech national technical standards.
WITHDRAWN published on 1.5.1993
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:1998)
WITHDRAWN published on 1.9.2000
Selected format:Acoustics. Reference zero for the calibration of audiometric equipment. Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators
WITHDRAWN published on 1.5.1996
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
WITHDRAWN published on 1.8.2016
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz (ISO/TR 389-5:1998)
WITHDRAWN published on 1.8.2000
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and difuse-field listening conditions
WITHDRAWN published on 1.12.1998
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
WITHDRAWN published on 1.5.2006
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
WITHDRAWN published on 1.6.2020
Selected format:Acoustics - Statistical distribution of hearing thresholds related to age and gender
Standard published on 1.9.2018
Selected format:Acoustics - Statistical distribution of hearing thresholds as a function of age (ISO 7029:2000)
WITHDRAWN published on 1.1.2001
Selected format:Latest update: 2024-09-09 (Number of items: 2 346 212)
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