References
- Dyrlund O. Some relationships between hearing aid frequency response and speech discrimination of profoundly deaf children–pilot study. Scand Audiol 1988; 17: 201–5
- Grover B C, Martin M C. On the practical gain limit for postaural hearing aids. Br J Audiol 1974; 8: 121–4
- Measurements of the performance characteristics of hearing aids for quality inspection and delivery purposes. International Electrotechnical Commission, Geneva 1983, IEC 118–7
- Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions. International Electrotechnical Commission, Geneva 1983, IEC 118–8.
- Johansen P A. An evaluation of the acoustical feedback damping for behind the ear hearing aids. Research Laboratory for Technical Audiology, OdenseDenmark 1975, Report 75–1
- Lundh P. Acoustical feedback problems associated with hearing aids. Research Unit, Oticon A/S, Denmark, Denmark 1982, Internal Report No. 19–8–6. Snekkersten
- Nolan M, Elzemety S, Tucker I G, McDonough D F. An investigation into the problems involved in producing efficient earmoulds for children. Scand Audiol 1978; 7: 231–7
- Schwartz D M, Lyregaard P E, Lundh P. Hearing aid selection for severe-to-profound hearing loss. Hear J 1988; 41: 13–17
- Tucker I G, Nolan M, Colclough R O. A new high-efficiency earmould. Scand Audiol 1981; 7: 225–9
- Veil I. Ways and means of reducing feedback tendencies in hearing aids. Audiol Acoust 1981; 20: 176–84