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ISO/R 226:1961

Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions
1 dhj 1961
95.99 Withdrawal of Standard   1 maj 1987

General information

95.99     1 maj 1987

ISO

ISO/TC 43

None of the other values

13.140  

anglisht   frëngjisht  

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NOW

WITHDRAWN
ISO/R 226:1961
95.99 Withdrawal of Standard
1 maj 1987

REVISED BY

WITHDRAWN
ISO 226:1987