References
- Arlinger S, Kinnefors C. Reference equivalent threshold sound pressure levels for insert earphones. Scand Audiol 1989; 18: 195–8
- Brinknann K, Richter U. Reference zero for the calibration of pure tone audiometers equipped with insert earphones. Acustica 1990; 70: 202–7
- IEC 126. IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts. International Electrotechnical Commission, Geneva 1973
- IEC 303. IEC provisional reference coupler for the calibration of earphones used in audiometry. International Electrotechnical Commission, Geneva 1970
- IEC 711. Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts. International Electrotechnical Commission, Geneva 1981
- ISO 389. Acoustics—Standard reference zero for the calibration of pure tone air conduction audiometers. International Organization for Standardization, Geneva 1985
- ISO 8253–1. Acoustics—Audiometric test methods, Part 1: Basic pure tone air and bone conduction threshold audiometry. International Organization for Standardization, Geneva 1989
- Robinson D W, Shipton M S, Hinchcliffe R. Audiometric zero for air conduction. A verification and critique of international standards. Audiology 1981; 20: 409–31