BS 4668:1971
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for an acoustic coupler (IEC reference type) for calibration of earphones used in audiometry
Hardcopy , PDF
07-15-2001
English
02-22-1971
NO CONTENTS SECTION
Specifies a reference coupler for loading an earphone with specified acoustic impedance when calibrating audiometers for the frequency range 125 Hz to 8000 Hz.
Committee |
EPL/29
|
DocumentType |
Standard
|
Pages |
10
|
PublisherName |
British Standards Institution
|
Status |
Superseded
|
SupersededBy |
BS 6655:1986 | Specification for pure tone air conduction threshold audiometry for hearing conservation purposes |
BS 6083-3:1991 | Hearing aids Methods for measurement of electroacoustical characteristics of hearing aid equipment not entirely worn on the listener |
BS 5502-21:1990 | Buildings and structures for agriculture Code of practice for selection and use of construction materials |
BS 6083-10:1988 | Hearing aids Guide to hearing aid standards |
BS 4669:1971 | Specification for an artificial ear of the wide band type for the calibration of earphones used in audiometry |
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