Reference number
ISO/R 226:1961
ISO/R 226:1961
Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions
Edition 1
1961-12
Withdrawn
ISO/R 226:1961
4099
Withdrawn (Edition 1, 1961)

General information

  •  : Withdrawn
     : 1961-12
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 8
  • ISO/TC 43
    13.140 
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