Pentti Körkkö

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Research indicates significant contribution of extrinsic laryngeal mechanisms to voice production. This article reviews the major theories of the role of the external laryngeal factors in voice production and relevant experimental data. The review suggests that partly neglected external factors and possibly even misinterpretation of some of the recently(More)
Ten teachers made recordings during one normal working day using a portable DAT recorder and a head-mounted microphone. In addition, the subjects filled in a questionnaire of signs of vocal fatigue. The speech samples were selected from the first and last lesson from three points representing the beginning, middle and end part of the lesson, respectively.(More)
Students of speech therapy and audiology are often faced with the difficulty of obtaining a realistic view of the speech reception abilites of the hearing impaired. Illustrating speech recognition defects is a demanding task for the teaching staff, too. To improve the students’ awareness of the effects of hearing defects, an interactive multimedia programme(More)
In Finnish, coarticulatory effects of vowels readily appear in the production of the fricative /s/(S). In this developmental study, spectral moments analysis was used to compare young children’s productions of S in symmetrical vowel (V) contexts (e.g. /iSi, uSu, ySy, ɑSɑ/) with similar adult productions. The subjects were children in three age groups while(More)
Traditional classroom techniques lacking the advantages offered by multimedia demonstrations often fall short of the goal of furnishing the students with an adequate “ears-on” awareness of the problems of the hearingimpaired. As a first step towards virtual hearing impairment, a CD-ROM with speech material simulating a selection of common types of hearing(More)
The virtual reality of hearing impairments has obvious practical applications in areas such as audiology, speech therapy and hearing aid technology and serves as an informational tool for the family members of the hearing impaired. To simulate hearing impairment, a CD-ROM with filtered speech material accessible through a graphical user-interface was(More)
The effects of two simulated hearing impairments (presbyacusis) on speech perception were investigated in two groups of normally hearing subjects (30 and 48 subjects, respectively). Eight patients with presbyacusis with similar hearing impairment to those in the latter simulation served as the clinical material. Word recognition scores were measured in(More)
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