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This article describes an arrangement for simultaneous recording of speech and the geometry of vocal tract. Experimental design is considered from the phonetics point of view. The speech signal is recorded with an acoustic-electrical arrangement and the vocal tract with MRI. Finally, data from pilot measurements on vowels is presented, and its quality is(More)
The human vocal folds are known to interact with the vocal tract acoustics during voiced speech production; namely a nonlinear source-filter coupling has been observed both by using models and in in vivo phonation. These phenomena are approached from two directions in this article. We first present a computational dynamical model of the speech apparatus(More)
Many languages exploit suprasegmental devices in signaling word meaning. Tone languages exploit fundamental frequency whereas quantity languages rely on segmental durations to distinguish otherwise similar words. Traditionally, duration and tone have been taken as mutually exclusive. However, some evidence suggests that, in addition to durational cues,(More)
We compare numerically computed resonances of the human vocal tract with formants that have been extracted from speech during vowel pronunciation. The geometry of the vocal tract has been obtained by MRI from a male subject, and the corresponding speech has been recorded simultaneously. The resonances are computed by solving the Helmholtz partial(More)
Spatial data of the human vocal tract (VT), larynx, and thorax can be obtained by magnetic resonance imaging (MRI) during steady, sustained phonation. Long acquisition time increases the resolution as well as the errors due to involuntary motion of VT. We discuss two experiments with a single test subject to find a suitable 3D MRI data acquisition procedure(More)
The fundamental frequency of a complex sound modulates the perceived duration of a sound. Higher pitch sounds are perceived longer compared to lower pitch sounds as shown by several independent studies since 1973. In this paper, the effect of language background is studied: native speakers of Finnish and German participated in a two alternative forced(More)
We present anatomic and acoustic data from a pilot study on the Finnish vowels [A, e, i, o, u, y, ae, ø]. The data were acquired simultaneously with 3D magnetic resonance imaging (MRI) and a custom built sound recording system. The data consist of a single static repetition of each vowel with constant f 0. The imaging sequence was 7.6 s long and had an(More)
Discrete phonological phenomena form our conscious experience of language: continuous changes in pitch appear as distinct tones to the speakers of tone languages, whereas the speakers of quantity languages experience duration categorically. The categorical nature of our linguistic experience is directly reflected in the traditionally clear-cut linguistic(More)
A procedure for the vectorisation and feature extraction of the human vocal tract is proposed. The raw data is obtained by high resolution 3D MRI. Because the amount of manual work in the data processing has been minimised, large datasets can be treated. The vectorised data can be used for both numerical as well as physical modelling of the vocal tract(More)