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                Acoustics. Reference zero for the calibration of audiometric equipment. Part 4: Reference levels for narrow-band masking noise
STANDARD published on 1.2.2001
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        Designation standards: STN EN ISO 389-4
                Classification mark:  011630
                
                Catalog number:  81090
                
                
               
                Publication date standards:  1.2.2001
                  SKU:  NS-538232
          The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
        Country:          Slovak technical standard
        Category: Technical standards STN
        
                
              
Noise with respect to human beingsAcoustics and acoustic measurements
Táto časť ISO 389 stanovuje referenčné hladiny pre úzkopásmový maskovací šum zavádzaný vzdušným vedením zo slúchadla v audiometrii čistým tónom.
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