GB/T 4963-1985

Normal equal-loudness contours for pure tones under free field listening conditions

NORM herausgegeben am 28.2.1985

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The information about the standard:

Designation standards: GB/T 4963-1985
Note: UNGÜLTIG
Publication date standards: 28.2.1985
Country: Chinese technical standard
Kategorie: Technische Normen GB