Intra-speaker variability in palatometric measures of consonant articulation

Dromey, Christopher; Sanders, Marybeth

doi:10.1016/j.jcomdis.2009.05.001

Cited by 10 publications

(8 citation statements)

References 19 publications

(30 reference statements)

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“…Honda, Maeda, Hashi, Dembowski, and Westbury (1996) demonstrated that the individual oral morphology has a clear impact on the articulatory strategies for vowels. Research has also shown that speakers may use markedly different articulatory strategies for consonant sounds, particularly for /l/, /r/, and /s/ (Dromey and Sanders, 2009). It is plausible that differences in orofacial morphology and habitual articulation patterns may have contributed to the differences that were observed between the speakers.…”

Section: Discussionmentioning

confidence: 99%

Coronal view ultrasound imaging of movement in different segments of the tongue during paced recital: Findings from four normal speakers and a speaker with partial glossectomy

Bressmann¹,

Flowers²,

Wong³

et al. 2010

Clinical Linguistics & Phonetics

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The goal of this study was to quantitatively describe aspects of coronal tongue movement in different anatomical regions of the tongue. Four normal speakers and a speaker with partial glossectomy read four repetitions of a metronome-paced poem. Their tongue movement was recorded in four coronal planes using two-dimensional B-mode ultrasound imaging. Quantitative indicators of tongue function (total distance travelled and concavity) were calculated. In all participants, it was observed that the centre of the tongue travelled greater distances than the lateral free margins. The tongues of the female speakers F1 and F2 travelled greater distances than those of the males M1 and M2. The greatest distances travelled were observed in the speaker with partial glossectomy G. In three of the participants, the greatest cumulative distances were recorded for the anterior tongue (F1, M1, and G) and in the other two (F2 and M2) in the posterior tongue. The concavity measure illustrated that the posterior tongue showed consistent grooving during connected speech, in all speakers. Flatness or convexity of the tongue was mainly observed in the anterior tongue. The study provides the first quantitative description of coronal tongue movement in a complex speech passage. Future research will have to further examine the effects of gender and orofacial morphology on the coronal shape and movement of the tongue.

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Section: Discussionmentioning

confidence: 99%

Coronal view ultrasound imaging of movement in different segments of the tongue during paced recital: Findings from four normal speakers and a speaker with partial glossectomy

Bressmann¹,

Flowers²,

Wong³

et al. 2010

Clinical Linguistics & Phonetics

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“…In spite of the breadth of these studies, it wasn't until recently that researchers examined variability in lingua-palatal contact patterns across and within normal speakers. EPG data generated by 20 individuals uttering vowel-consonant -vowel articulatory stimuli were analyzed by Sanders [12] in an unpublished thesis; and later by Dromey and Sanders [13]. The participants in their studies had no reported history of speech or language disorders.…”

Section: Introductionmentioning

confidence: 99%

“…Although past research has focused on EPG studies and acquired glossectomy, no studies to date have investigated EPG and intraoral articulatory constrictions of a PWCA. This article, the fifth in the series on the PWCA, investigates the unique speech production of this 44-year old female born without a tongue, and compares these patterns with those published by Dromey and Sanders [13]. For a full review of past papers published on this PWCA, please see McMicken et al [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Electropalatography in a Case of Congenital Aglossia

McMicken¹

2014

Commun Disord Deaf Stud Hearing Aids

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Objective: The purpose of this study, the fifth in a series on a Person with Congenital Aglossia (PWCA), was: 1) to determine if there was activation of electrodes in a PWCA during swallow and articulation as detected by the Electropalatography (EPG), 2) to compare the electrode activation patterns in PWCA to those in People without Congenital Aglossia (PWoCA). Methods: EPG was performed using the Complete Speech SmartPalate® software and hardware designed from impressions of the PWCA, a 44-year old Caucasian female. Stimulus materials consisted of 11 vowel-constantvowel combinations were derived from prior research. Results: The PWCA was able to activate electrodes in the anterior and posterior palatal areas, noticeably greater in swallowing than in speech. While PWCA patterns demonstrated significantly fewer electrode activations, patterns were discernibly similar to normal data derived from PWoCA. Conclusion: This study employed EPG to investigate the unique speech production pattern of a 44-year old female PWCA and compared these patterns with those of PWoCA published by Dromey and Sanders. The question remains as to the exact nature of the articulatory compensations and adjustments which allow the PWCA to speak in an intelligible fashion and produce consonants which are perceptually correct and distinguishable from each other.

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“…7 Alternatively, palatometry could reveal important aspects of linguapalatal contact in singers. 8 Future work could also evaluate the impact of biofeedback on the process of vowel equalization. For example, a real-time formant tracking system that plots F 1 against F 2 could provide individual singers the visual feedback necessary to monitor the progress of their equalization while practicing.…”

Section: Resultsmentioning

confidence: 99%

The Acoustic Effects of Vowel Equalization Training in Singers

2011

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Vowel equalization is a technique that can be used by singers to achieve a more balanced vocal resonance, or chiaroscuro, by balancing corresponding front and back vowels, which share approximate tongue heights, and also high and low vowels by means of a more neutral or centralized lingual posture. The goal of this single group study was to quantify acoustic changes in vowels after a brief training session in vowel equalization. Fifteen young adults with amateur singing experience sang a passage and sustained isolated vowels both before and after a 15-minute training session in vowel equalization. The first two formants of the target vowels /e, i, ɑ, o, u/ were measured from microphone recordings. An analysis of variance was used to test for changes in formant values after the training session. These formant values mostly changed in a manner reflective of a more central tongue posture. For the sustained vowels, all formant changes suggested a more neutral tongue position after the training session. The vowels in the singing passage mostly changed in the expected direction, with exceptions possibly attributable to coarticulation. The changes in the vowel formants indicated that even a brief training session can result in significant changes in vowel acoustics. Further work to explore the perceptual consequences of vowel equalization is warranted.

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Intra-speaker variability in palatometric measures of consonant articulation

Cited by 10 publications

References 19 publications

Coronal view ultrasound imaging of movement in different segments of the tongue during paced recital: Findings from four normal speakers and a speaker with partial glossectomy

Coronal view ultrasound imaging of movement in different segments of the tongue during paced recital: Findings from four normal speakers and a speaker with partial glossectomy

Electropalatography in a Case of Congenital Aglossia

The Acoustic Effects of Vowel Equalization Training in Singers

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