ISO-226 › Complete Document History
Acoustics - Normal equal-loudness-level contours
Complete Current Edition: |
3RD EDITION - Acoustics - Normal equal-loudness-level contours - March 1, 2023
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Obsolete Revision Information: |
2ND EDITION - Acoustics -- Normal equal-loudness-level contours - Aug. 15, 2003
1ST EDITION - ACOUSTICS - NORMAL EQUAL-LOUDN - May 1, 1987 |