Douglas McColl

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This study explored the attributes of languages to which listeners attend, using magnitude estimation and multidimensional scaling techniques. In magnitude estimation. lislcners assign any numerical value to a set of stimuli. In response to the question: Ilow similar is this language to English’? fifty college students assigned numerical values to spoken(More)
OBJECTIVE This study investigated observers' intelligibility for the spoken output of an individual with Moebius syndrome (MoS) with and without visual cues. DESIGN An audiovisual recording of the speaker's output was obtained for 50 Speech Intelligibility in Noise sentences consisting of 25 high predictability and 25 low predictability sentences. Stimuli(More)
The purpose of this investigation was to judge whether the Lombard effect, a characteristic change in the acoustical properties of speech produced in noise, existed in adductor spasmodic dysphonia speech, and if so, whether the effect added to or detracted from speaker intelligibility. Intelligibility, as described by Duffy, is the extent to which the(More)
The purpose was to assess whether equal-appearing interval or magnitude-estimation scaling resulted in a data set with a closer correlation to the physical stimuli, made up of speech samples with varying amounts of disfluency. 20 young adults completed two tasks. In Task 1, subjects used a 7-point equal-appearing interval scale to rate the disfluency of 10(More)
The purpose of this investigation is to determine the extent to which background noise negatively impacts the intelligibility of tracheoesophageal (TE) speech. Four male TE speakers provided speech samples that were recorded in quiet and in noise conditions. The listener/subjects occupied a sound-treated booth and were presented with two tasks. In Task 1,(More)
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