@article{GengTurkScobbieetal.2013, author = {Geng, Christian and Turk, Alice and Scobbie, James M. and Macmartin, Cedric and Hoole, Philip and Richmond, Korin and Wrench, Alan and Pouplier, Marianne and Bard, Ellen Gurman and Campbell, Ziggy and Dickie, Catherine and Dubourg, Eddie and Hardcastle, William and Kainada, Evia and King, Simon and Lickley, Robin and Nakai, Satsuki and Renals, Steve and White, Kevin and Wiegand, Ronny}, title = {Recording speech articulation in dialogue - evaluating a synchronized double electromagnetic articulography setup}, series = {Journal of phonetics}, volume = {41}, journal = {Journal of phonetics}, number = {6}, publisher = {Elsevier}, address = {London}, issn = {0095-4470}, doi = {10.1016/j.wocn.2013.07.002}, pages = {421 -- 431}, year = {2013}, abstract = {We demonstrate the workability of an experimental facility that is geared towards the acquisition of articulatory data from a variety of speech styles common in language use, by means of two synchronized electromagnetic articulography (EMA) devices. This approach synthesizes the advantages of real dialogue settings for speech research with a detailed description of the physiological reality of speech production. We describe the facility's method for acquiring synchronized audio streams of two speakers and the system that enables communication among control room technicians, experimenters and participants. Further, we demonstrate the feasibility of the approach by evaluating problems inherent to this specific setup: The first problem is the accuracy of temporal synchronization of the two EMA machines, the second is the severity of electromagnetic interference between the two machines. Our results suggest that the synchronization method used yields an accuracy of approximately 1 ms. Electromagnetic interference was derived from the complex-valued signal amplitudes. This dependent variable was analyzed as a function of the recording status - i.e. on/off - of the interfering machine's transmitters. The intermachine distance was varied between 1 m and 8.5 m. Results suggest that a distance of approximately 6.5 m is appropriate to achieve data quality comparable to that of single speaker recordings.}, language = {en} } @article{BrunnerGhoshHooleetal.2011, author = {Brunner, Jana and Ghosh, Satrajit and Hoole, Philip and Matthies, Melanie and Tiede, Mark and Perkell, Joseph}, title = {The influence of auditory acuity on acoustic variability and the use of motor equivalence during adaptation to a perturbation}, series = {Journal of speech, language, and hearing research}, volume = {54}, journal = {Journal of speech, language, and hearing research}, number = {3}, publisher = {American Speech-Language-Hearing Assoc.}, address = {Rockville}, issn = {1092-4388}, doi = {10.1044/1092-4388(2010/09-0256)}, pages = {727 -- 739}, year = {2011}, abstract = {Purpose: The aim of this study was to relate speakers' auditory acuity for the sibilant contrast, their use of motor equivalent trading relationships in producing the sibilant /integral/, and their produced acoustic distance between the sibilants /s/ and /integral/. Specifically, the study tested the hypotheses that during adaptation to a perturbation of vocal-tract shape, high-acuity speakers use motor equivalence strategies to a greater extent than do low-acuity speakers in order to reach their smaller phonemic goal regions, and that high-acuity speakers produce greater acoustic distance between 2 sibilant phonemes than do low-acuity speakers. Method: Articulographic data from 7 German speakers adapting to a perturbation were analyzed for the use of motor equivalence. The speakers' produced acoustic distance between /s/ and /integral/ was calculated. Auditory acuity was assessed for the same speakers. Results: High-acuity speakers used motor equivalence to a greater extent when adapting to a perturbation than did low-acuity speakers. Additionally, high-acuity speakers produced greater acoustic contrasts than did low-acuity-speakers. It was observed that speech rate had an influence on the use of motor equivalence: Slow speakers used motor equivalence to a lesser degree than did fast speakers. Conclusion: These results provide support for the mutual interdependence of speech perception and production.}, language = {en} } @misc{ShawGafosHooleetal.2011, author = {Shaw, Jason A. and Gafos, Adamantios I. and Hoole, Philip and Zeroual, Chakir}, title = {Dynamic invariance in the phonetic expression of syllable structure}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {516}, issn = {1866-8364}, doi = {10.25932/publishup-41247}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-412479}, pages = {455 -- 490}, year = {2011}, abstract = {We asked whether invariant phonetic indices for syllable structure can be identified in a language where word-initial consonant clusters, regardless of their sonority profile, are claimed to be parsed heterosyllabically. Four speakers of Moroccan Arabic were recorded, using Electromagnetic Articulography. Pursuing previous work, we employed temporal diagnostics for syllable structure, consisting of static correspondences between any given phonological organisation and its presumed phonetic indices. We show that such correspondences offer only a partial understanding of the relation between syllabic organisation and continuous indices of that organisation. We analyse the failure of the diagnostics and put forth a new approach in which different phonological organisations prescribe different ways in which phonetic indices change as phonetic parameters are scaled. The main finding is that invariance is found in these patterns of change, rather than in static correspondences between phonological constructs and fixed values for their phonetic indices.}, language = {en} } @article{GafosCharlowShawetal.2014, author = {Gafos, Adamantios I. and Charlow, Simon and Shaw, Jason A. and Hoole, Philip}, title = {Stochastic time analysis of syllable-referential intervals and simplex onsets}, series = {Journal of phonetics}, volume = {44}, journal = {Journal of phonetics}, publisher = {Elsevier}, address = {London}, issn = {0095-4470}, doi = {10.1016/j.wocn.2013.11.007}, pages = {152 -- 166}, year = {2014}, abstract = {We pursue an analysis of the relation between qualitative syllable parses and their quantitative phonetic consequences. To do this, we express the statistics of a symbolic organization corresponding to a syllable parse in terms of continuous phonetic parameters which quantify the timing of the consonants and vowels that make up syllables: consonantal plateau durations, vowel durations, and their variances. These parameters can be estimated from continuous phonetic data. This enables analysis of the link between symbolic phonological form and the continuous phonetics in which this form is manifest. Pursuing such an analysis, we illustrate the predictions of the syllabic organization corresponding to simplex onsets and derive a number of previously experimentally observed and simulation results. Specifically, we derive not only the canonical phonetic manifestations of simplex onsets but also the result that, under certain conditions we make precise, the phonetic indices of the simplex onset organization change to a range of values characteristic of the complex onset organization. Finally, we explore the behavior of phonetic indices for syllabic organization over progressively increasing,sizes of lexical samples, thereby concomitantly diversifying the phonetic context over which these indices are taken.}, language = {en} }