References
- ANSI. American National Standard Specification for Audiometers S3.6-1989. New York: American National Standards Institute, 1989.
- Byrne D, Dillon H. The National Acoustic Laboratories' (NAL) new procedure for selecting the gain and frequency response of a hearing aid. Ear Hear 1986; 7: 63–70.
- Byrne D, Parkinson A, Newall P. Hearing aid gain and frequency response requirements for the severely/profoundly hearing impaired. Ear Hear 1990; 11:40–9.
- Carhart R, Jerger JF. Preferred method for clinical determinations of pure-tone thresholds. J Speech Hear Disord 1959; 24: 330–45.
- Clark JL, Roeser RJ. Three studies comparing performance of the ER-3A tubephone with the TDH-50P earphone. Ear and Hear 1988; 9: 268–74.
- Dillon H. Allowing for real ear venting effects when selecting the coupler gain of hearing aids. Ear Hear 1991;12: 406–15.
- Engebretson AM, Morley RE, Popelka GR. Development of an ear-level digital hearing aid and com-puter-assisted fitting procedure: an interim report. J Rehabil Res Dev 1987; 24: 55–64.
- Levitt H, Neuman A, Sullivan J. Studies with digital hearing aids. Acta Otolaryngol 1990; Suppl. 469: 57–69.
- Lindgren F. A comparison of the variability in thresholds measured with insert and conventional supra-aural earphones. Scand Audiol 1990; 19: 19–23.
- McDermott HI, Vandali AE, Hoesel RJM, McKay CM, Harrison JM, Cohen LT. A portable programma-ble digital sound processor for cochlear implant research. IEEE Trans Rehabilitation Engineering 1993; 1: 94–100.
- McDermott HJ. A programmable sound processor for advanced hearing-aid research. IEEE Trans Reha-bilitation Engineering 1998; 6: 53–9.
- Neuman AC. Digital technology and clinical practice: the outlook for the future. J Rehabil Res Dev 1987; 24: 1–6.
- Peterson G, Lehiste I. Revised CNC lists for auditory tests. J Speech Hear Disord 1962; 27: 62–70.
- Tang H, Letowski T. High-frequency threshold measurements using insert earphones. Ear Hear 1992; 13: 378–9.
- Wilber LA, Kruger B, Killion MC. Reference thresholds for the ER-3A insert earphone. J Acoust Soc Am 1988; 83: 669–76.