GAZI MEDICAL JOURNAL, cilt.31, ss.375-382, 2020 (Hakemli Dergi)
Objective: The speech sounds are used in audiology and audio-verbal therapy. Perception of speech sounds is related with their acoustic properties and inner ear physiology. Therefore, a perceptional aspect of the acoustic content should not be overlooked. In this study, we evaluated linear and perceptional changes in the vowels' sound content at and over the comfortable hearing level according to dBA-filter.