Abstract
Specifies levels supplementary to those specified in Ïã¸ÛÁùºÏ²Ê¿ª½± 389:1991 (to be re-issued as Ïã¸ÛÁùºÏ²Ê¿ª½± 389-1). Values given are applicable to insert earphones of type Etymotic Research ER-3A, coupled to the human ear by ear inserts of type ER-3-14.
General information
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Status: PublishedPublication date: 1994-07Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 7
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Technical Committee :Ïã¸ÛÁùºÏ²Ê¿ª½±/TC 43ICS :13.140
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