A real-time MRI investigation of the role of lingual and pharyngeal articulation in the production of the nasal vowel system of French

Carignan, Christopher; Shosted, Ryan; M, Fu; Liang, Zhi Pei; Sutton, Bradley P.

doi:10.1016/j.wocn.2015.01.001

Cited by 45 publications

(36 citation statements)

References 32 publications

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“…Dynamic MRI is useful for research and clinical studies in speech, especially in capturing structural and functional changes of the vocal tract. Recent applications of dynamic MRI to speech‐related studies include investigating articulatory dynamics , studying phonetic variability , learning language variation , examining physiological defects , monitoring swallow functions and observing professional singing or voice training . A review of the clinical needs and impact of dynamic speech MRI can be found in .…”

Section: Introductionmentioning

confidence: 99%

High‐frame‐rate full‐vocal‐tract 3D dynamic speech imaging

Barlaz

Holtrop

et al. 2016

Magn. Reson. Med.

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Section: Introductionmentioning

confidence: 99%

High‐frame‐rate full‐vocal‐tract 3D dynamic speech imaging

Barlaz

Holtrop

et al. 2016

Magn. Reson. Med.

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“…[12][13][14][15]17,43 On the contrary, a study of English vowel /i/ provided evidence of compensatory articulation to resist the phonologization of vowel nasalization. 11 These findings along with the findings of this study indicated an active role of oropharyngeal articulation for achieving the acoustic goal (e.g., either to enhance or to attenuate nasalization), which lays the groundwork for using oropharyngeal articulatory strategies to compensate for the acoustic disturbances caused by inappropriate VPO.…”

Section: A Articulatory and Acoustic Characteristics Of Nasal Vowelsmentioning

confidence: 99%

“…Non-invasive techniques such as real-time MRI allow us to record the static structure of the nasal tract and dynamic movements of the entire vocal tract, which was used by Carignan et al to study the oropharyngeal articulation of nasal vowels. 13 We will explore the possibility of integrating this technique into our modeling approach in follow-up studies.…”

Section: E Implications and Future Directionsmentioning

confidence: 99%

“…[7][8][9][10] Although information on direct assessment of the effect of oropharyngeal articulation on hypernasal speech is scant, studies of oral-nasal vowel contrasts in various languages demonstrate that speakers adapt both velar position and oropharyngeal articulatory placement for achieving the acoustic contrast between oral and nasal vowels. [11][12][13][14][15] Oropharyngeal articulatory differences between oral and nasal vowels are evidenced in a variety of languages with phonemic nasalization. These oropharyngeal articulatory differences were found to enhance the acoustic effects of nasalization by shifting vowel formants toward the nasal antiformants such that the formants are weakened or annihilated.…”

Section: Introductionmentioning

confidence: 99%

“…These oropharyngeal articulatory differences were found to enhance the acoustic effects of nasalization by shifting vowel formants toward the nasal antiformants such that the formants are weakened or annihilated. 16 For example, Carignan and co-workers 12,13 studied Northern Metropolitan French and identified a counter-clockwise chain-shift in the oral articulation of nasal vowels, which was demonstrated to have enhanced the effect of nasalization on F1 and F2. Shosted et al 15 presented evidence of tongue lowering in back nasal vowels of Hindi, which enhanced the acoustic salience of nasality.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of oropharyngeal articulatory adaptation to compensate for the acoustic effects of nasalization

Rong

Kuehn

Shosted

2016

The Journal of the Acoustical Society of America

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Associations between tongue movement pattern consistency and formant movement pattern consistency in response to speech behavioral modifications The Journal of the Acoustical Society of America 140, 3728 (2016) 1070-1082 (1973)]. In this study, a speaker-adaptive articulatory model was developed to simulate speaker-customized oropharyngeal articulatory adaptation to compensate for the acoustic effects of nasalization on /a/, /i/, and /u/. The results demonstrated that (1) the oropharyngeal articulatory adaptation effectively counteracted the effects of nasalization on the second lowest formant frequency (F2) and partially compensated for the effects of nasalization on vowel space (e.g., shifting and constriction of vowel space) and (2) the articulatory adaptation strategies generated by the speaker-adaptive model might be more efficacious for counteracting the acoustic effects of nasalization compared to the adaptation strategies generated by the standard articulatory model in Rong and Kuehn. The findings of this study indicated the potential of using oropharyngeal articulatory adaptation as a means to correct maladaptive articulatory behaviors and to reduce nasality.

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High-resolution dynamic speech imaging with joint low-rank and sparsity constraints

et al. 2014

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Purpose To enable dynamic speech imaging with high spatiotemporal resolution and full-vocal-tract spatial coverage, leveraging recent advances in sparse sampling. Methods An imaging method is developed to enable high-speed dynamic speech imaging exploiting low-rank and sparsity of the dynamic images of articulatory motion during speech. The proposed method includes: a) a novel data acquisition strategy that collects navigators with high temporal frame rate, and b) an image reconstruction method that derives temporal subspaces from navigators and reconstructs high-resolution images from sparsely sampled data with joint low-rank and sparsity constraints. Results The proposed method has been systematically evaluated and validated through several dynamic speech experiments. A nominal imaging speed of 102 frames per second (fps) was achieved for a single-slice imaging protocol with a spatial resolution of 2.2 × 2.2 × 6.5 mm3. An eight-slice imaging protocol covering the entire vocal tract achieved a nominal imaging speed of 12.8 fps with the identical spatial resolution. The effectiveness of the proposed method and its practical utility was also demonstrated in a phonetic investigation. Conclusion High spatiotemporal resolution with full-vocal-tract spatial coverage can be achieved for dynamic speech imaging experiments with low-rank and sparsity constraints.

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A real-time MRI investigation of the role of lingual and pharyngeal articulation in the production of the nasal vowel system of French

Cited by 45 publications

References 32 publications

High‐frame‐rate full‐vocal‐tract 3D dynamic speech imaging

High‐frame‐rate full‐vocal‐tract 3D dynamic speech imaging

Modeling of oropharyngeal articulatory adaptation to compensate for the acoustic effects of nasalization

High-resolution dynamic speech imaging with joint low-rank and sparsity constraints

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