ISO/R 226:1961
Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions
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WITHDRAWN
ISO/R 226:1961
95.99
Withdrawal of Standard
May 1, 1987