ISO 131:1979废止
Acoustics - Expression Of Physical And Subjective Magnitudes Of Sound Or Noise In Air
出版：International Organization for Standardization
专家解读视频
Deals with changing level of loudness in phons to scale of loudness in sones. Covers sound pressure and sound power levels.
UNE 74010:1991 - Identical
UNE 40072:1958 (R1999) - Identical
AS 3663-1989 - Equivalent
BS 3045:1981 - Equivalent
NS 4824 Ed. 1 (1990) - Similar
NFS 30 004:1966 - Equivalent
DIN 45630-1 (1971-12) - Identical
NBN ISO 131:1992 - Identical
NEN ISO 131:1989 - Identical
NEN ISO 131 : 1989 - Identical
UNE 74010 : 1991 - Identical
DIN 45630-1 : 1971 - Identical
UNE 40072 : 1958 - Identical
NBN ISO 131 : 1992 - Identical
NS 4824 : 1ED 1990 - Similar to
NZS/ISO 131:1979 - Identical
NBN ISO 131 : 1992 - Identical
NEN ISO 131 : 1989 - Identical
UNE 40072 : 1958 - Identical
DIN 45630-1 : 1971 - Identical
NZS/ISO 131:1979 - Identical
UNE 74010 : 1991 - Identical
