This standard applies to diagnostic sound signal generators - audiometers designed to determine the character
GOST 4.312-1985 Referenced Document
GOST 20790-1982 Medical instruments, apparatus and equipment. General specifications
GOST 23511-1979 Man-made noise from domestic electrical appliances or electrotechnical appliances connected to the electrical mains of dwelling-houses. Limit and measuring methods
GOST 4.312-1985 history
1985GOST 4.312-1985 Product-quality index system. Diagnostic audio-signal generators. Audiometers. Nomenclature of indices