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Main page>UNE standards>UNE EN ISO 389-9:2010 - 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)
in stockReleased: 2010-01-13
UNE EN ISO 389-9:2010
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)
Acústica. Cero de referencia para la calibración de equipos audiométricos. Parte 9: Condiciones de ensayo preferidas para la determinación de los niveles umbral de audición de referencia (ISO 389-9:2009)
