PubMed · 13186299
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A P DE LACERDA. [Speech audiometry].. https://pubmed.ncbi.nlm.nih.gov/13186299/
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In nine patients with unilateral deafness and normal hearing in the contralateral ear, measurements of sound localization and speech perception were obtained before intervention, with a conventional contralateral routing of sound (CROS) hearing aid and later with a bone-anchored hearing aid (BAHA) implanted in the deaf ear. Sound localization did not show any differences between the three conditions. Speech perception using short, everyday sentences showed a reduction in the head-shadow effect of 2 dB for both the conventional CROS hearing aid and the BAHA in comparison to the unaided condition. Patients' real-life experiences of the three conditions were evaluated using the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire. The results showed a significant benefit with the BAHA in situations involving background noise and reverberation and a reduced aversion to loud sounds in comparison to the unaided and conventional CROS conditions.
The masking effect of three types of music and white masking noise upon special audiometric tests was determined in laboratory c. The stimulus-noise (S/N) ratio was found to be the most considerable factor influencing oral information processing in spite of the type of music or noise used as a masking agent. All types of music (modern, classic or modern music records in backwards order) showed no significant differences in masking being in the same way stronger maskers as white noise. Some conclusions are made concerning hygienic and ergonomic aspects of the problem.
The ability to understand speech must be considered the most important measurable aspect of human auditory function. Due to the innovative developments in hearing aids and cochlear implants, there has been a renewed interest in speech recognition testing. During recent years, the start of several multi-centre studies have increased the urge to come to some consensus on the use of different speech materials. In this article a global overview of existing types of speech material in Dutch will be given. For each type, there is a reference to similar speech audiometric tests in French, English and German.