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Original Article

Speech Discrimination by Sensorineural Hearing-Impaired Persons Using a Transposer Hearing Aid

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Pages 161-170 | Received 16 Jun 1973, Published online: 12 Oct 2009
 

Abstract

Nine students with moderate to profound, long—term, sensorineural hearing loss were trained and tested in conditions of “listen”, “look” and “look and listen” with the transposer hearing aid. Results with the Modified Rhyme Test and PB—50 word lists indicate that some Ss can receive additional benefit (6—10%) from transposition. Since as a group all Ss did not perform uniformly, it appears that the potential benefits of the transposer hearing aid should be assessed individually. Benefit from transposition does not appear to be limited to those people having only low frequency hearing. Some Ss with residual hearing through 4 kHz showed improvement in discrimination. Training is of utmost importance when evaluating this particular aid, as most Ss need time to adjust to listening to the transposed signal. Therefore conventional hearing aid evaluation procedures should be modified when evaluating this aid.

Ni studerende med langvarige, perceptive høretab fra middel til svœr grad er blevet trœnet og undersøgt med transposer høreapparat under følgende vilkår: “lyt”, “se” samt “se og lyt”. Undersøgelse med “Modified Rhyme Test” og PB-50 ordlister viste, at nogle tunghøre kan opnd en forbedring af skelneevnen (6—10%) ved brug af transponering. Da resultatet varierede fra individ til individ, må fordelene ved transponering bedømmes sœrdeles individuelt. Transponering synes ikke udelukkende at komme de patienter til gode, som kun har hørelse svarende til de dybe frekvenser. Nogle patienter med bevaret hørelse til over 4000 Hz viste en forbedret diskrimination. Trœning er af største betydning, når dette høreapparat skal bedømmes, da de fleste hørehœmmede behøver tid til at omstille sig til at Iytte til de transponerede signaler. Det vil der for vœre nødvendigt at tilpasse de almindeligt anvendte metoder til bedømmelse af høreapparater, når transposer høreapparatet skal bedømmes.

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