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IEC 61027:1991 ED1

Instruments for the measurement of aural acoustic impedance/admittance IEC 61027:1991 ED1

Publication date:   Apr 17, 1991

General information

99.60 Withdrawal effective   Nov 23, 2004

IEC

TC 29

International Standard

17.140.50   Electroacoustics

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Scope

Covers instruments designed primarily for the measurement of modulus of acoustic impedance/ admittance in the human external acoustic meatus using a probe tone of 226 Hz. Defines the characteristics to be specified by the manufacturer, lays down performance specifications for four types of instrument and specifies the facilities to be provided on three of these types. Methods of test to be used for approval testing rather than routine calibration are also specified.

Life cycle

NOW

WITHDRAWN
IEC 61027:1991 ED1
99.60 Withdrawal effective
Nov 23, 2004

REVISED BY

ABANDON
IEC 61027 ED2

PUBLISHED
IEC 60645-5:2004 ED1