References
- British Standards Institution. BS 2497 Standard reference zero for the calibration of pure lone air conduction audimeters. Part 5. Specification for a standard reference zero using an acoustic coupler complying with BS 4668. British Standards Institution, London 1988
- British Standards Institution. BS 2497 Standard reference zero for the calibration of pure tone air conduction audiometers. Part 6. Specification for a standard reference zero using an artificial ear complying with BS 4669. British Standards Institution, London 1988
- British Standards Institution. BS 2497 Standard reference zero for the calibration of pure lone air conduction audiometers. Part 7. Specification for a standard reference zero at frequencies intermediate between those given in Parts 5 and 6 of BS 2497. British Standards Institution, London 1988
- British Standards Institution. BS 4668 Specification for an acoustic coupler (IEC reference type) for the calibration of earphones used in audiometry. British Standards Institution, London 1971
- British Standards Institution. BS 4669 Specification for an artificial ear of the wide band type for the calibration of earphones used in audiometry. British Standards Institution, London 1971
- International Electrotechnical Commission. IEC 303 IEC provisional reference coupler for the calibration of earphones used in audiometry. International Electrotechnical Commission, Geneva 1970
- International Electrotechnical Commission. IEC 318 An IEC artificial ear, of the wide band type, for the calibration of earphones used in audiometry. International Electrotechnical Commission, Geneva 1970
- International Organization for Standardization. ISO 389 Acoustics—standard reference zero for the calibration of pure tone air conduction audiometers, with Addendum 1––1983 and Addendum 2––1986. International Organization for Standardization, Geneva 1985
- Michael P. L., Bienvenue G. R. A comparison of acoustical performance between a new one-piece earphone cushion and the conventional two-piece MX41/AR cushion. Journal of the Acoustical Society of America 1980; 67: 693–698
- Robinson D. W. A proposal for audiometric zero referred to the IEC artificial ear. NPL Acoustics Report Ac 85. National Physical Laboratory, Teddington 1978