BS 2497-2:1969
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for a reference zero for the calibration of pure-tone audiometers Data for certain earphones used in commercial practice
Hardcopy
07-23-2013
English
03-10-1971
Specifies value of sound pressure level corresponding to audiometric zero for monaural earphone listening to pure tones of certain stated frequencies.
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