ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS. (ISO 389-7:1996).
STANDARD published on 30.7.1998
Designation standards: UNE-EN ISO 389-7:1998
Note: WITHDRAWN
Publication date standards: 30.7.1998
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: Spanish technical standard
Category: Technical standards UNE