DIN ISO 12124 E : 2002

1 Scope <br>2 Normative references<br>3 Terms and definitions<br>4 Limitations<br>5 Conditions for test environment<br>&nbsp;&nbsp;5.1 Environmental conditions<br>&nbsp;&nbsp;5.2 Ambient background noise<br>&nbsp;&nbsp;5.3 Acoustical properties<br>&nbsp;&nbsp;5.4 Sound field characteristics<br>6 Preparation of subject<br>&nbsp;&nbsp;6.1 Otoscopic examination<br>&nbsp;&nbsp;6.2 Position of subject<br>&nbsp;&nbsp;6.3 Instructions to subject<br>7 Measurement procedure<br>&nbsp;&nbsp;7.1 Equipment<br>&nbsp;&nbsp;7.2 Calibration<br>&nbsp;&nbsp;7.3 Equalization methods<br>&nbsp;&nbsp;7.4 Test signal<br>&nbsp;&nbsp;7.5 Location of the subject<br>&nbsp;&nbsp;7.6 Location of the tester<br>&nbsp;&nbsp;7.7 Choice of field reference point<br>&nbsp;&nbsp;7.8 Choice of measurement point<br>&nbsp;&nbsp;7.9 Location and coupling of the hearing aid<br>&nbsp;&nbsp;7.10 Real-ear unaided response (REUR) curve<br>&nbsp;&nbsp;7.11 Real-ear unaided gain (REUG) curve<br>&nbsp;&nbsp;7.12 Real-ear occluded response (REOR) curve<br>&nbsp;&nbsp;7.13 Real-ear occluded gain (REOG) curve<br>&nbsp;&nbsp;7.14 Real-ear aided response (REAR) curve<br>&nbsp;&nbsp;7.15 Real-ear aided gain (REAG) curve<br>&nbsp;&nbsp;7.16 Real-ear insertion gain (REIG) curve<br>8 Data to be recorded<br>Annex<br>A Positioning the probe microphone sound inlet at the<br>&nbsp;&nbsp;measurement point<br>Bibliography

Specifies procedures and requirements for measuring the real-ear acoustical characteristics of hearing aids.