<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½±/TR 389-5:1998]]> /cms/render/live/en/sites/isoorg/contents/data/standard/02/24/22497.html Ïã¸ÛÁùºÏ²Ê¿ª½± standards and projects Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½±/TR 389-5:1998]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½±/TR 389-5:1998 - 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]]> /cms/render/live/en/sites/isoorg/contents/data/standard/02/24/22497.html /cms/render/live/en/sites/isoorg/contents/data/standard/02/24/22497.html 2006-10-31