GB/T 4963-1985

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

NORMA vydaná dňa 28.2.1985

Anglicky a čínsky -
Elektronické PDF (380.70 EUR)

The information about the standard:

Designation standards: GB/T 4963-1985
Note: NEPLATNÁ
Publication date standards: 28.2.1985
Country: Chinese technical standard
Kategória: Technické normy GB