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Cross References:
ISO 389-3
IEC 645-1 EN ISO 389:1995
EN ISO 389-2:1996
ISO 389:1991
ISO 389-2:1994
IEC 126
IEC 303
IEC 318
IEC 711
 

Document History

  1. BS EN ISO 389-4:1999

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    Acoustics. Reference zero for the calibration of audiometric equipment-Reference levels for narrow-band masking noise

    • Most Recent
  2. BS 7113:1989


    Specification for reference levels for narrow-band masking noise

    • Historical Version