Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"acoustic measures"”.
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Prosodically Induced Acoustic Variation in English, Korean, and Hindi
… Korean and Hindi that examine factors governing acoustic variation. The focus of this research is the patterns of variation in the acoustic expression of laryngeal phonological contrasts among stop consonants and supralaryngeal contrasts among vowels, and the role of systemic and prosodic factors …
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Optimizing acoustic and perceptual assessment of voice quality in children with vocal nodules
… a minimal set of speech tasks and associated acoustic analysis methods that are most salient in characterizing the impact of vocal nodules on vocal function in children. Hence, a pediatric assessment protocol was developed based on the standardized Consensus Auditory Perceptual Evaluation of …
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The effect of bilingualism on vocal parameters related to vocal fatigue among Spanish-English bilingual speakers
… the current study was to identify the task and acoustic measures that could be applied to future research investigating vocal production in bilingual speakers. Acoustic analyses were conducted on speech recordings from the Archive of L1 and L2 Scripted and Spontaneous Transcripts and Recordings …
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The application of linear and nonlinear estimators of acoustic variability in the assessment of speech motor control in hypokinetic dysarthria
To improve diagnostic and outcome measures in the assessment and treatment of speech disorders, researchers and clinicians are always in search of new techniques to quantify speech impairment. This thesis investigates the relatively unexplored area of linear and nonlinear estimators of acoustic …
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Perceived Similarity Between Complex Sounds: The Contribution Of Acoustic, Descriptive And Categorical Features
The thesis identifies some of the most salient acoustic and descriptive features employed in listeners' representations of sounds focussing on similarity judgements. A range of descriptive data (including word pair and imagery/word use) was collected alongside acoustic measures for the sound …
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Audioptimization : global-based acoustic design
Acoustic design is a difficult problem, because the human perception of sound depends on such things as decibel level, direction of propagation, and attenuation over time, none of which are tangible or visible. The advent of computer simulation and visualization techniques for acoustic design and …
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Objective Evaluation of Tracheoesophageal Speech Quality
… It is also beneficial to have objective measures of speech quality as opposed to subjective, in order to save time, money and other such resources. Objective measures of speech quality are typically divided into two groups: “intrusive” and “non-intrusive” measures. Intrusive measures …
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From prosodic structure to acoustic saliency: an fMRI investigation of speech rate, clarity, and emphasis
Acoustic variability in fluent speech can arise at many stages in speech production planning and execution. For example, at the phonological encoding stage, the grouping of phonemes into syllables determines which segments are coarticulated and, by consequence, segment-level acoustic variation. …
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The Effect of a Lingual Magnet on Fricative Production: An Acoustic Evaluation of Placement and Adaptation
… these devices may have on the perceptual and acoustic characteristics of speech. This study examined the effect of placing a small magnet on the tongue of ten normal adult speakers while reading a sentence containing /s/ and "sh" in initial, medial and final position. Two different placements …
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The evaluation of second language fluency and foreign accent
… perception of fluency and a foreign accent? What acoustic attributes correlate with the perception of fluency and a foreign accent? To answer these questions, speech samples were randomly selected from two spontaneous speech corpora produced by Mandarin native speakers and learners (both heritage …
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Prosodic Boundary Effects on Syntactic Disambiguation in Children with Cochlear Implants, and in Normal Hearing Adults and Children
… attachment results and performance on psychoacoustic tests of gap detection threshold and frequency limen were also investigated. Materials: The experiments were designed on E-Prime 2.0 software (Psychology Software Tools, Pittsburgh, PA). The sentences were recorded on Praat software …
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Speech Production and Developmental Language Disorder in Children
… children with DLD have higher thresholds for the acoustic parameters that yield stress patterns in language, which contribute to rhythmicity. Given the abundance of literature connecting stress and rhythm, I hypothesize here that children with DLD will show difficulties in their abilities to …
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Statistical and Biological Analyses of Acoustic Signals in Estrildid Finches
<p>Acoustic communication is a process that involves auditory perception and signal processing. Discrimination and recognition further require cognitive processes and supporting mechanisms in order to successfully identify and appropriately respond to signal senders. Although acoustic communication …
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Contrast preservation and constraints on individual phonetic variation
… are performed. In both experiments, multiple acoustic measures of intervocalic consonant strength are taken, and PCA is used for dimensionality reduction, resulting in measures of overall consonant strength. These measures are then analyzed with Bayesian linear mixed effects regression (using …