Hearing Aid Compatible Telephones: History and Current Status

Linda Kozma-Spytek

doi:10.1055/s-2003-37910

Seminars in Hearing, Table of Contents

Semin Hear 2003; 24(1): 017-028
DOI: 10.1055/s-2003-37910

Hearing Aid Compatible Telephones: History and Current Status

Linda Kozma-Spytek

Research Audiologist, Technology Access Program, Gallaudet University, Washington, DC

Abstract

ABSTRACT

Voice communication over the telephone between hearing aid wearers and their calling partners can be problematic for a number of reasons. One of the problems is feedback, which can be created when a telephone and hearing aid couple together acoustically to transmit sound from one to the other. Hearing aid compatible telephones provide an effective alternative to acoustic coupling. They use an internal means of inductively coupling with a hearing aid's telecoil. Hearing aid compatibility is currently required by law for all corded and cordless phones in the United States; however, this was not always the case. This article traces the history of inductive coupling between telephones and hearing aids and discusses the Hearing Aid Compatibility Act of 1988. This law, among other things, requires the use of technical standards to ensure telephone compatibility with hearing aids. Details of the technical standard are provided along with information regarding the American National Standards Institute standard for measuring hearing aid telecoil sensitivity for telephone applications. Recent advances in cellular and telephone technology also are discussed with regard to hearing aid compatibility requirements and what the future may hold for meeting these requirements.

KEYWORDS

Hearing aid compatibility - inductive coupling - telephone communication

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References

REFERENCES

1 Saks D. A consumer group disagrees. Hear Speech Action . 1975; 2 12-13
2 Berger K. Carbon hearing aid: the electric hearing aid. In: Berger K, ed. The Hearing Aid: Its Operation and Development Livonia, MI: The National Hearing Aid Society 1984: 51-70
3 Lybarger S. Telephone coupling. In: Studebaker G, Bess F, eds. The Vanderbilt Hearing Aid Report: State of the Art Research Needs Upper Darby, PA: Monographs in Contemporary Audiology 1982: 91-93
4 Smith G. Coupling hearing aids to the telephone. The Volta Review . 1971; 1 47-50
5 Stokes R. The telephone company agrees. Hear Speech Action . 1975; 2 11-12
6 Holmes A, Kaplan H, Yanke R. Tell us your telephone troubles: using open-ended questionnaires to explore telephone use. JARA . 1998; 31 87-96
7 Hellgren J, Lunner T, Arlinger S. Variations in the feedback of hearing aids. J Acoust Soc Am . 1999; 106 2821-2833
8 Stoker R, French-St. George M, Lyons J. Inductive coupling of hearing aids and telephone receivers. J Rehabil Res Dev . 1986; 23 71-78
9 Smith G. The telephone adapter and other telephone aids for the hard of hearing. The Volta Review . 1974; 76 474-484
10 Smith G. Coupling hearing aids to the telephone. The Volta Review . 1971; 1 47-50
11 Cashman M, Rossman R, Abel S. A comparison of three modes of hearing aid-telephone coupling. J Otolaryngol . 1982; 11 239-247
12 Goldberg H. Telephone amplifying pick-up devices. Hearing Instruments . 1975; 26 19-20
13 Gladstone V. History and status of incompatibility of hearing aids and telephones. ASHA . 1975; 17 103-104
14 A new telephone adapter for hearing aids. J Acoust Soc Am 1974; 56 1929
15 Bove C. An overview of the Food and Drug Administration's medical device amendments. In: Tyler R, Schum D, eds. Assistive Devices for Persons with Hearing Impairment Needham Heights, MA: Allyn & Bacon 1995: 10-23
16 Gladstone V. Variables affecting hearing aid telephone induction coil performance. Hearing Instruments . 1985; 36 18-21
17 Preves D. Standardizing hearing aid measurement parameters and electroacoustic performance tests. In: Valente M, ed. Hearing Aids: Standards, Options, and Limitations New York: Thieme 1996: 40-48
18 Welsby K. Problems of inductive coupling. Proceedings of the COST 219 Seminar Telephones and Hearing Aids, The Hague, March 17, 1993
19 Grimes A, Mueller G. Using probe-microphone measures to assess telecoils and ALDs. Part I: Assessment of telecoil performance. The Hearing Journal . 1991; 44 16-21
20 Grimes A, Mueller G. Using probe-microphone measures to assess telecoils and ALDs. Part II: Assessment of ALD's, telephones, and telephone amplifiers. The Hearing Journal . 1991; 44 21-29
21 Beck L, Nance G. Hearing aids, assistive listening devices, and telephones: issues to consider. Semin Hear . 1989; 10 78-89
22 Short J. EMC considerations for digital cellular radio and hearing aids. Proceedings of the COST 219 Seminar Telephones and Hearing Aids, The Hague, March 17, 1993