Communication Sciences and Disorders Commons^™

Minimum Mean Square Error Spectral Peak Envelope Estimation For Automatic Vowel Classification, Jaishree Venugopal

Electrical & Computer Engineering Theses & Dissertations

Spectral feature computations continue to be a very difficult problem for accurate machine recognition of speech. In this work, which focuses on vowels, a new spectral peak envelope method for vowel classification is developed, based on a missing frequency components model of speech recognition. According to the missing frequency components model, vowel recognition depends only on the spectral (harmonic) peaks. Smoothing and interpolation of the spectra, performed in the standard cepstral analysis method commonly used in automatic speech recognition, actually loses valuable information and results in reduced recognition accuracy. The new method for feature extraction presented in this thesis is …

Contingencies Governing The Production Of Fricatives, Affricates, And Liquids In Babbling, Christina E. Gildersleeve-Neumann, Barbara L. Davis, Peter F. Macneilage

Speech and Hearing Sciences Faculty Publications and Presentations

Studies of early-developing consonants (stops, nasals, and glides) in babbling have shown that most of the variance in consonants and their associated vowels, both within and between syllables, is due to a "frame" produced by mandibular oscillation, with very little active contribution from intrasyllabic or intersyllabic tongue movements. In a study of four babbling infants, the prediction that this apparently basic "frame dominance" would also apply to late-developing consonants (fricatives, affricates, and liquids) was tested. With minor exceptions, confirming evidence for both the predicted intrasyllabic and intersyllabic patterns was obtained. Results provide further evidence for the frame dominance conception, but …

Phonological Awareness Training: Effects On Phonological Awareness And Reading Skills, Cassie Nelson

Masters Theses

Past research has established that phonological awareness skills are an important precursor to the development of reading (Jenkins & Bowen, 1994; Catts & Karnhi, 1986; Bradley & Bryant, 1978; Frith, 1981). Results of numerous phonological awareness training programs have been published (Ball & Blachman, 1988, 1991; Lundberg, Frost, & Petersen, 1988; Bradley & Bryant, 1983, 1985), however, none have compared the roles of professionals involved in teaching phonological awareness skills. Additionally, the effectiveness of various service delivery models has not been reported. This study was conducted to examine the effectiveness of a phonological awareness training program on kindergarten children's phonological …

Impact Of Amateur Educational Video Viewing On Language Acquisition Of Preschool Children, Jennifer L. Radcliffe

Masters Theses

Child language-learning is a complex process that varies for each individual child. Researchers have found that children learn from viewing professional television programs specifically designed for children, such as Sesame Street. Professional television programming principles can be adopted to produce amateur educational videos. Video may also be a viable option to provide repetitive models to improve vocabulary acquisition within speech-language pathology. The purpose of this study was to measure the effect of direct stimulation with amateur educational videos on a child's general and specific vocabulary acquisition.

A six-week experiment included an initial two-week control period, a two-week experimental period …

Training Nonconventional Autoclitic And Tact Relationships In Children, Ingolfur Bergsteinsson

Dissertations

To some extent, one understands a complex aspect of human language if one can produce that kind of language in children who have not already acquired it. Skinner’s (1957) concept of autoclitic secondary verbal behavior is the most complex of his various verbal units, and until recently has not been the subject of experimental analysis. Howard and Rice (1988) made the first attempt to generate an autoclitic repertoire in preschool children, and the present study is an attempt to corroborate and extend their findings. They worked with the autoclitic “like” which identifies the accompanying primary verbal behavior as a form …

The Intelligibility Of Japanese Speakers Of English To Native Speakers Of English, Manabu Aoki

All Master's Theses

This research was conducted to identify the most important English speech sounds which determine non-native English speakers' intelligibility to native speakers of English. The researcher focused on variation of pronunciation by Japanese English speakers of differing levels of proficiency and examined the correlation between their pronunciation and intelligibility to native speakers. The results provided some keys to intelligible English speech and some implications for developing comprehensible speech in teaching English as a second language or English as a foreign language.

The Effectiveness Of Minimal Pair Therapy For S-Cluster Reduction, Julie Anne Mcdow

Loma Linda University Electronic Theses, Dissertations & Projects

This descriptive study compared minimal pair therapy to a modeling imitative method of phonological remediation. The s-cluster was targeted for remediation. Four phonologically impaired children, ages 3-2 to 3-11, served as subjects. In the minimal pair procedure, minimal pairs were used to contrast the meaning of correctly produced target words and incorrectly produced target words. In the non-minimal pair approach, correct productions were modeled and cued for the subjects to imitate/produce. Generalization to untrained words was insufficient to assess the effectiveness of the two procedures used. Other measures made during the course of the study produced some interesting findings. Imitative …

Percentage Of Phonological Process Usage In Expressive Language Delayed Children, Sherri Lynn Miller

Dissertations and Theses

Language delay and phonological delay have been shown to coexist. Because they so often co-occur, it is possible that they may interact, sharing a relationship during the child's development. A group of children who were "late talkers" as toddlers, achieved normal development in their syntactic ability by the preschool period. Because their language abilities are known to have increased rapidly, data on their phonological development could provide information on the relationship between phonological and syntactic development.

The purpose of this study was to compare the percentage of phonological process usage of the eight most commonly used simplification processes in four-year-old …

Visual Speech Training Aid For The Deaf, Subhashri Venkat

Electrical & Computer Engineering Theses & Dissertations

A computer-based vowel articulation training aid has been developed. A "continuous" acoustic-phonetic transformation is performed to map speech parameters to a lower dimensionality display space. There are two possible approaches to this transformation problem. The transformation could be either linear or a combination nonlinear/linear. The nonlinear transformation is performed using a multi-layered feedforward neural network with linear output layers. Speech parameters are extracted either from an analog filter bank arrangement (band energies) or by a digital signal processing procedure (Discrete Cosine Transform Coefficients). The speech parameters obtained from both methods correspond to the spectral envelope of the speech signals. The …

Pragmatic Conversational Skills Of Children Identified As Emotionally Disturbed, Deidre Winder

Dissertations and Theses

Communication refers to the conveyance of intended messages so that the listeners' attitudes, beliefs, or behaviors are changed. Communication through a language system may be thought of as the integration of the three components of content (semantics), form (syntax), and use (language in context or pragmatics). The corning together of content, form, and use in signs, words, phrases, and discourse is the essence of language development. The synergism of content/form/use makes up language competence, or knowledge. When children speak and understand a message, they have a plan that is knowledge of language and they use that plan for the behavior …

Maternal Linguistic Input To Normal And Expressive Language Delayed Toddlers, Terril Joy Elwood

Dissertations and Theses

Research suggests that the linguistic environment of the expressive language delayed child is different from that of his peers. Does this difference actually exist and if so, what are its characteristics? The purpose of this study was to describe the linguistic characteristics of mothers' input to children with normal language acquisition and those of mothers of expressively delayed toddlers; and to identify any differences between these groups. Though considerable research exists in this area, few studies have dealt specifically with large groups of expressively delayed toddlers.

Types Of Phonological Processes Occurring In Normal Black English Speakers, Eileen Rella

Dissertations and Theses

Black English (BE) is a rule-governed linguistic system with its own phonology, syntax, semantics, and pragmatics. BE is a dialect, not a disordered variation of standard English (SE). When compared to SE, BE phonology has been described in terms of omissions, substitutions, and additions. This study looked at normal BE speakers in Portland, Oregon and described their dialectal differences in terms of phonological processes.

An Investigation Of The Effect Of Using Varying Stimuli To Assess Normal Children's Comprehension Of Five Locative Prepositions, Kathleen G. Versteeg

Dissertations and Theses

A recurring concern in recent research appears to be the role that assessment variables play in accurately measuring children's knowledge and use of prepositions. Age and order of acquisition of prepositions has become a dynamic rather than static standard, as different ways of assessing prepositions also give different results. These researchers have investigated assessment variables such as context (picture, object, no context) and response (self actions, manipulating, pointing) in assessing normal children's understanding and use of prepositions. Most have considered these variables separately, but a few have contrasted a limited number of variables with significant results for some age groups. …

A Comparison Of Norm-Referenced, Traditional, And Computer-Assisted Language Assessments, Michel P. Helmke

Masters Theses

Current literature in the field of communication disorders suggests that traditional norm-referenced tests may yield erroneous or misleading information regarding a child's level of language acquisition. Additional research suggests that the most valid and reliable technique for determining a client's level of linguistic expertise is language sampling and analysis. Language sampling and analysis has traditionally been rejected as a means of evaluation, especially for the school-age child, due to the length of time necessary to complete such analyses. In recent years, language sampling and analysis techniques have been redesigned as computer software application programs. Computer software application programs may significantly …

The Effects Of Two Management Techniques On The Generalization Of A Syntax Structure, Karin Jeanne Goodling

Dissertations and Theses

The effectiveness of any language training program is determined by generalization of the clinically trained behaviors to spontaneous speech. Traditional language programs which employ operant procedures to establish the behavior in the clinic and reinforcement from family, teachers and peers in a variety of settings to obtain generalization, have been successful in establishing the use of grammatical rules in the clinic setting, but reportedly have failed to promote generalization. Recent literature in the areas of semantics and pragmatics has produced a trend toward teaching language in natural contexts. The purpose of this study was to investigate: 1) whether a group …

A Comparative Study Of The Northwestern Syntax Screening Test Data, Sharon Ann Moore

Dissertations and Theses

The purpose of this study was to compare NSST data (Lee, 1969, 1971) with data obtained in Portland, Oregon for children 4.0-4.11 years of age. The questions this study sought to answer were: 1) Is there a significant difference between the expressive and receptive scores obtained by Lee, (1969, 1971) and the scores obtained in Portland, Oregon? 2) What are the means, standard deviations and percentiles of the NSST scores of a select group of four-year-old children in Portland, Oregon?

A Comparison Of Motoric And Linguistic Features In Graphic Samples Of Fluent And Nonfluent Aphasic Persons Over Three Time Intervals, Babette Fisher

Dissertations and Theses

The purpose of this study was to compare the graphic production of fluent and non-fluent aphasic groups in terms of motoric and linguistic characteristics at three intervals of recovery, and to analyze change over time after combining the fluent and non-fluent aphasic groups.

Normative Data For The Tennessee Test Of Rhythm And Intonation Patterns (T-Trip), Ray Drommond

Dissertations and Theses

Prosody is the flow of speech created by controlling elements such as pitch, rate, loudness, and stress (Tiffany and Carrell, 1977). Prosody is vital to intelligibility of speech and also communicates meaning. Despite the importance of prosody, however, few tests for the adequacy of prosodic ability in young children have been published (Koike and Asp, 1981a). To remedy this paucity of tools, Koike and Asp published the Tennessee Test of Rhythm and Intonation Patterns (T-TRIP). The clinical usefulness of the T-TRIP has been limited by a lack of normative data against which to compare individual children's performance.

The purpose of …

The Expressive Acquisition Of Locative And Directional Prepositions By Severely-To-Profoundly Hearing Impaired Children, Joann Warlick

Dissertations and Theses

Prepositions are important for the syntactical structure of the sentence and also to relate meaning, particularly meaning associated with concepts of place and time. Expressive acquisition of function words, including prepositions, is significantly delayed in the hearing impaired population. Yet, acquisition sequence for expressive prepositions has not been determined for this population.

The purpose of this study was to investigate the oral expressive acquisition of locative and directional single word prepositions in severely-to-profoundly hearing impaired children. The question this study sought to answer was: At what age levels are seventeen locative and directional single word prepositions expressively acquired by severely- …

Pragmatic Deficits In Normal, Articulation Disordered, And Language Delayed Samples, Karen Jean Lucas

Dissertations and Theses

The purposes of this investigation were to identify, via the Pragmatic Protocol, the incidence of pragmatic disorders within public school articulation and language caseloads and a control group of normal students and to specify the pragmatic areas, i.e., utterance propositional, and/or illocutionary/perlocutionary act categories in which deficits occur.

A Comparison Of Two Language Screening Instruments In Two Populations, Karen Kumpula-Lacey

Dissertations and Theses

Screening has been suggested as the most efficient method to find students with potential language problems (Neidecker, 1980). Based on the need for a standardized adolescent language screening tool, Prather, Breecher, Stafford, and Wallace (1980) developed the Screening Test of Adolescent Language (STAL). This is a six to eight minute test with twenty-three items which examine vocabulary, auditory memory span, language processing, and proverb explanation. Following an item analysis of the STAL, Prather, Brenner, and Hughes (1981) derived the Mini-Screening Test of Adolescent Language (M-STAL). This test contains five items from the STAL and requires one minute to administer.

Phonational Frequency Ranges In Vocally Untrained Adults Using Different Cardinal Vowels, Lorie Renee Chambers

Dissertations and Theses

In the clinical management of voice clients, it is important to measure accurate pitch ranges in order to determine if a client has a normal range or is speaking at an optimum pitch. It is not clear from the literature which vowel should be used in determining these pitch ranges. The purpose of this investigation was to determine the phonational frequency ranges in adults with no vocal training when phonating the cardinal vowels of /i/, /u/, and /a/. The investigation sought to answer the following question: Does the phonational frequency range in vocally untrained adults vary significantly when phonating the …

The Acquisition Of Obligatory-Do, Bernadette Maresh-Ericksen

Dissertations and Theses

The auxiliary verb obligatory-do is used in forming questions, negative and emphatic sentences. Currently there is no test or norms established for the acquisition of obligatory-do. The purpose of this study was to establish age trends, via elicited imitation for the acquisition of obligatory-do according to the sentence type in which it expressively occurs i.e., negative sentences, emphatic sentences, interrogative reversals and wh-questions. This study addressed the following question: At what ages do children expressively demonstrate, via elicited imitation, the auxiliary verb obligatory-do in negative sentences, emphatic sentences, interrogative reversals and wh-questions? A secondary question was: In what manner does …

Pragmatics: The Verbal Expression Of Feelings, Ann Paula Zimmerman

Dissertations and Theses

The purpose of this investigation was to determine at which age levels, between four and eight years, children express Praise, Apology, Commiseration, Blame, Challenge, Endearment, and both a Positive and Negative State.

Subjects were thirty children, six from each age level between four and eight years, selected from an elementary and preschool within the Portland area. Sixteen picture cards and stories were designed to elicit the eight different feelings. Each subject responded to questions at the end of the story and was given two chances to express the appropriate feeling. Each response was judged as appropriate or inappropriate and scored …

Comparison Of Scores Obtained On The Ppvt And The Ppvt-R, Jennie L.M. Choong

Dissertations and Theses

The Peabody Picture Vocabulary Test (PPVT) is a widely used receptive vocabulary screening tool, but it is not without its limitations, such as inadvisable I.Q. usage and a standardization procedure that lacks scope. A revision of the PPVT, known as the Peabody Picture Vocabulary Test-Revised (PPVT-R) was published in 1981, and contains a more complete standardization procedure as well as some structural changes of the test itself (Dunn, 1981). Speech/language pathology, whose diagnosticians most commonly use the age equivalent value, is a profession that would gain from information which deals with the equivalency of the PPVT-R to the original PPVT. …

A Comparison Of Spanish Language Samples Elicited By The Investigator In The Clinic And By The Mothers In The Home, Soledad Chavarria Navas

Dissertations and Theses

The primary purpose of the present study was to compare the quality of spontaneous language samples elicited from twelve low socioeconomic, normally developing, migrant Spanish-speaking subjects by their mothers in the home and by this investigator in the clinic. The subjects ranged in age from three years, one month to six years, nine months.

The essential question sought to determine if the comparison of language samples elicited in the home by the mothers and the language samples. elicited in the clinic by the investigator yielded significant differences in syntactical language development as measured by the Developmental Assessment of Spanish Grammar …

A Phonological And Morphological Analysis Of Two-Year Old Children's Utterances Of Final /S/ And /Z/ In Nouns, Janice Brewer

Masters Theses

The purpose of this study was to examine, from a phonological and morphological point of view, two-year old children's utterances of final /s/ and final /z/ in singular (CVC) and plural (CVCC) forms.

The subjects were 32 two-year old children who attended day-care centers. There were 13 males and 19 females, ranging in age from 26 months to 36 months, with an average age of 29 months.

In a 16 item test, each of the 32 children named eight singular nouns (/bʌs/, /haus/, /fers/, /maus/, /nouz/, /tʃiz/, /rouz/, /hous/) and eight plural nouns (/kʌps/, /hæts/, /keɪks/, /sɑks/, /bɔlz/, /gʌnz/, /bɛdz/, …

A Comparison Of The Vocabulary Ability Of Four- And Five-Year-Old Bilingual Mexican-American Children With That Of Monolingual Anglo-American Children, Amparo Abila

Dissertations and Theses

This study sought to investigate the Spanish and English receptive pictorial vocabulary of four- and five-year-old bilingual Mexican-American children. The performance of bilingual Mexican-American children on the Mexican-American Inventory of Receptive Abilities--MIRA (Nelson-Burgess and Meyerson, 1975) and the Peabody Picture Vocabulary Test--PPVT (Dunn, 1959) was compared to that of monolingual Anglo-American children of the same relative age range and socioeconomic level.

An Intercorrelation Analysis Of The Itpa And Feature Finders, Debra Betts Bork

Masters Theses

No abstract provided by author.

An Investigation Of Receptive And Expressive Pluralization And Tense Inflectional Skills Of Three Year Old Children, James Michael Coffman

Masters Theses

No abstract provided by author.