UNE - Spanish national standards

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 389-1:2017)

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ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 2: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES. (ISO 389-2:1994).

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Acoustics - Reference zero for the calibration of audiometric equipment - Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators (ISO 389-3:2016)

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ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)

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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 389-5:2006)

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Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration (ISO 389-6:2007)

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Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)

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Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones (ISO 389-8:2004)

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Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)

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Aerospace series- Steel FE-WM1502 (X11CrNiMoVN12-3)- Filler metal for welding. (Endorsed by AENOR in February of 2002.)

Available languages: English

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