Filters








61 Hits in 7.1 sec

Deriving vocal-tract area functions from midsagittal profiles and formant frequencies: A new model for vowels and fricative consonants based on experimental data

Denis Beautemps, Pierre Badin, Rafael Laboissière
1995 Speech Communication  
The two-fold aim of the present study was thus (1) to provide a set of coherent midsagittal functions, area functions and formant frequencies, for a small corpus of vowels and fricative consonants produced  ...  by one subject, and (2) to derive a midsagittal profile to area function conversion model optimised for this given subject.  ...  Pat Nye and collegues for kindly providing the original data of the Baer et al. (1991) study.  ... 
doi:10.1016/0167-6393(94)00045-c fatcat:iqjntl6n6bhyvmd7gt4zdgmcue

Recovery of vocal tract geometry fromformants for vowels and fricative consonants using a midsagittal-to-area function conversion model

Pierre Badin, Denis Beautemps, Rafael Laboissière, Jean-Luc Schwartz
1995 Journal of Phonetics  
A midsagittal-toarea function conversion model, which works both for vowels and fricative consonants, has been developed from these data.  ...  ., the recovery of vocal tract geometry from formant frequencies. A small database of articulatoryacoustic data has been established for one subject.  ...  A midsagittal-to-area function conversion model based on these data has been developed: this model works both for vowels and fricative consonants, which is an original feature.  ... 
doi:10.1016/s0095-4470(95)80044-1 fatcat:jd7j2akxyvevzp5thrcci6uppy

Page 1253 of Linguistics and Language Behavior Abstracts: LLBA Vol. 29, Issue 3 [page]

1995 Linguistics and Language Behavior Abstracts: LLBA  
Vo- cal-Tract Area Functions from Midsagittal Profiles and Formant Fre- quencies: A New Model for Vowels and Fricative Consonants Based on Experimental Data, Speech Communication, 1995, 16, 1, Jan, 27  ...  frequencies for a small corpus of vowels & fricative consonants produced by a single French male S; & (2) to derive a midsagittal profile to area function con- version model optimized for this S.  ... 

Linear degrees of freedom in speech production: Analysis of cineradio- and labio-film data and articulatory-acoustic modeling

Denis Beautemps, Pierre Badin, Gérard Bailly
2001 Journal of the Acoustical Society of America  
Finally, this model was complemented by a conversion model going from the midsagittal to the area function, based on a fitting of the midsagittal distances and the formant frequencies for both vowels and  ...  The following contribution addresses several issues concerning speech degrees of freedom in French oral vowels, stop, and fricative consonants based on an analysis of tongue and lip shapes extracted from  ...  It was complemented by a model converting the midsagittal contours to an area function based on a fitting of midsagittal functions and formant frequencies.  ... 
doi:10.1121/1.1361090 pmid:11386568 fatcat:ztoosk7vgzeefa46vaq5oet2ai

Geometry, kinematics, and acoustics of Tamil liquid consonants

Shrikanth Narayanan, Dani Byrd, Abigail Kaun
1999 Journal of the Acoustical Society of America  
Vocal tract tube dimensions estimated from MRI-derived area functions.  ...  In summary, using a simple one-dimensional acoustic model and vocal tract data derived from MRI, it was possible to establish the basic relations between vocal tract cavities and formant structure.  ... 
doi:10.1121/1.427946 pmid:10530023 fatcat:yjmytzaobvawzc5m6wz25pwyce

Influence of fundamental frequency in the perception of vowel height

Maria‐Gabriella Di Benedetto
1986 Journal of the Acoustical Society of America  
The considerations in obtaining adequate field data and in developing criteria, as weft as practical cost effective acoustical control measures developed for new generation theatres, are reviewed. 9:.15  ...  The results of field measur• ments (octave-band reverberation times, room-to-room NR'S, and backø ground sound-pressure levels) are reported for a large number of facilities including data for the often  ...  In the present study, vowel durations, jaw and lower lip movement data, and formant data were examined for a set of b-vowel-consonant utterances differing in stress and final consonant voicing.  ... 
doi:10.1121/1.2023451 fatcat:azf66ehedjhopeom7ryftavom4

A modeling investigation of articulatory variability and acoustic stability during American English /r/ production

Alfonso Nieto-Castanon, Frank H. Guenther, Joseph S. Perkell, Hugh D. Curtin
2005 Journal of the Acoustical Society of America  
Furthermore, simulations of two speakers' productions using the DIVA model of speech production in conjunction with a novel speaker-specific vocal tract model derived from magnetic resonance imaging data  ...  acoustic/auditory variables 1 (for example, formant frequency descriptors).  ...  Guenther, PI) from the National Institute on Deafness and Other Communication Disorders. A. Nieto-Castanon and J. Perkell also supported in part by R01 DC01925 (J. Perkell, PI).  ... 
doi:10.1121/1.1893271 pmid:15957787 fatcat:w6xbvaow4rhmxntatomac6azpe

Advances in real-time magnetic resonance imaging of the vocal tract for speech science and technology research

Asterios Toutios, Shrikanth S. Narayanan
2016 APSIPA Transactions on Signal and Information Processing  
Real-time magnetic resonance imaging (rtMRI) of the moving vocal tract during running speech production is an important emerging tool for speech production research providing dynamic information of a speaker's  ...  An important recent development has been the open release of a database that includes speech rtMRI data from five male and five female speakers of American English each producing 460 phonetically balanced  ...  A P P L I C A T I O N S The capability of vocal tract rtMRI data acquisition creates research opportunities for new and deeper insights in a number of areas.  ... 
doi:10.1017/atsip.2016.5 pmid:27833745 pmcid:PMC5100697 fatcat:f4vrj5kdkfhl3fgbaewij6mbwy

Relevance of time‐varying properties of the first formant frequency in vowel representation

Maria‐Gabriella Di Benedetto
1985 Journal of the Acoustical Society of America  
Articulatory speech synthesizers model the human vocal tract by means of its geometrical and functional properties.  ...  J. 51, 1233-1268{1972)] with a linear frequency-domain chain-matrix model of the vocal tract [e.g., M. M. Sondhi, paper •4.5.1, Proc. lnt.  ...  microcomputer program has been developed to generate midsagittal vocal-tract shapes from the corresponding formant frequencies.  ... 
doi:10.1121/1.2023018 fatcat:3lbckbce2rglzj7zx3fp4nhiui

Articulatory Uniformity Through Articulatory Reuse: insights from an Ultrasound Study of Sūzhōu Chinese

Matthew Faytak
2018 UC Berkeley Phonology Lab Annual Reports  
Analysis reveals that most Sūzhōu Chinese speakers typically use a single tongue posture uniformly across the fricative vowels and consonants examined, while a minority of speakers deviate from uniformity  ...  This thesis tests aspects of the model of uniformity-through-reuse with an experiment on Sūzhōu Chinese, whose fricative vowels are known to somewhat resemble alveolopalatal fricative consonants in their  ...  stops, and vocal tract shapes for sets of vowels.  ... 
doi:10.5070/p7141042486 fatcat:nfjll5v6craobce7txk7p2xyjq

Encoding of Articulatory Kinematic Trajectories in Human Speech Sensorimotor Cortex

Josh Chartier, Gopala K. Anumanchipalli, Keith Johnson, Edward F. Chang
2018 Neuron  
AKTs captured a wide range of movement types, yet they could be differentiated by the place of vocal tract constriction.  ...  Individual electrodes encoded a diversity of articulatory kinematic trajectories (AKTs), each revealing coordinated articulator movements toward specific vocal tract shapes.  ...  This work was supported by grants from the NIH (DP2 OD008627 and U01 NS098971-01). E.F.C is a New York Stem Cell Foundation-Robertson Investigator.  ... 
doi:10.1016/j.neuron.2018.04.031 pmid:29779940 pmcid:PMC5992088 fatcat:q7etbrnw4jfstkosu7ypsbit7y

Sound‐pressure level distribution in a long, narrow hallway: Measurements versus results from a computer model with scattering from surface roughness and diffraction

Lily M. Wang, Jonathan Rathsam, Claus L. Christensen, Jens H. Rindel
2005 Journal of the Acoustical Society of America  
Vocal tract area functions for eleven American English vowels were first obtained from six speakers, three female and three male, using magnetic resonance imaging ͑MRI͒.  ...  The effect of air pressure on the release of an alveolar stop consonant closure is simulated with a 2-D finite-element model of the front part of the midsagittal tongue in the vocal tract.  ...  Since lengths of periodic MLS-related source signals are not suitable for FFT-based decovolutions, and the fast MLS transform based on fast Hadamard transform is not applicable to the MLS-derived combined  ... 
doi:10.1121/1.4785653 fatcat:vcvuciqds5cztjto3gadvh6rtm

Calculation of the A term of magnetic circular dichroism based on time dependent-density functional theory I. Formulation and implementation

Michael Seth, Tom Ziegler, Arup Banerjee, Jochen Autschbach, Stan J. A. van Gisbergen, Evert J. Baerends
2004 Journal of Chemical Physics  
The data show a wide range of STI and Cx values for a given T, and the minimum STI at each reverberation time can be obtained by diffused field theory.  ...  For the interpolation of a continuous sonar beam at different frequency bands, directional frequency responses, atmospheric and geometric attenuation, and different lag times are taken into account for  ...  Comparison of vocal tract shaping patterns derived from articulatory fleshpoint data and MRI-based area functions. Brad H.  ... 
doi:10.1063/1.1747828 pmid:15268124 fatcat:hwyfald5a5f4njmw5h7p6vjhnu

Coded excitation and subband processing for blood velocity estmation in medical ultrasound

Fredrik Gran, Jorgen Arendt Jensen, Jesper Udesen, Michael Bachmann Nielsen
2007 Journal of the Acoustical Society of America  
Based on data collected with MRI and x-ray microbeam techniques, a kinematic model of the vocal tract area function has been developed that allows for efficient specification of time-dependent cross-sectional  ...  As the vocal tract shape changes, its resonance frequencies also continuously vary, shaping an excitation signal into a sequence of vowels and consonants.  ...  Performance of the model with these two approaches to vocal tract normalization was compared to listening tests on a large database of vowels spoken by men, women, and children. 4pSC13.  ... 
doi:10.1121/1.4782191 fatcat:cfka7odi35dihhbjgn5nqb3i7y

Anisotropy and sound propagation in glass wool

Viggo Tarnow
1999 Journal of the Acoustical Society of America  
ability ͑MAP͒ theory to produce a background estimate. The data model is guided by the measurement physics and the scene model is based on a Markov random field assumption.  ...  In this seminar the MAP estimator is described, along with practical issues associated with algorithm initialization, simulated performance with both white and colored-noise inputs, and real data examples  ...  The extraction of these features from the acoustic signal is based on standard LPC analysis for vowels, semi-vowels, and liquids, and from spectral shapes of DFT spectra for other sounds.  ... 
doi:10.1121/1.426652 fatcat:qfdzx3idfnamngq5rduzjj5qh4
« Previous Showing results 1 — 15 out of 61 results