Clinical observations on a digital hearing aid trial in a secondary school for the deaf

Jennifer Smith

Ovingdean Hall School, United Kingdom

Ovingdean Hall School is a residential secondary school with a natural aural approach to education. Each student is under the care of a Local Health Authority with it's own aid fitting protocol but school accepts responsibility for on-going audiological management. In view of the educational philosophy of the school, the consistent use of optimal amplification is essential. The opportunity to trial digital aids in the Widex Senso P series was made available to us through the UK distributor, P.C.Werth. Twelve students were selected to trial high power postauricular aids with digital speech processor (DSP). Six students were fitted with the P37 aid, a 2 channel linear processing aid and six with the P38 aid, a 3 channel fully automatic aid. Student selection was based on age, degree of hearing loss, described loudness discomfort, reported recurrent feedback and perceived audiological need. Aids were fitted using the Widex COMPASS protocol, modified to accommodate individual needs, and trialled for twelve weeks. Aids were evaluated using functional gain measures, open ear speech spectrum readings, speech perception tests presented in both quiet and noise and the LIFE questionnaire. This paper will discuss problems encountered during the fittings, results obtained in the trial and on-going clinical observations.