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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 ISO/R 226:1961

Publication date:   Dec 1, 1961

95.99 Withdrawal of Standard   May 1, 1987

General information

95.99 Withdrawal of Standard   May 1, 1987

ISO

ISO/TC 43 Acoustics

None of the other values

13.140   Noise with respect to human beings

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Withdrawn

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NOW

WITHDRAWN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

REVISED BY

WITHDRAWN
ISO 226:1987