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The possibility of speech processing in the absence of an intelligible acoustic signal has given rise to the idea of a 'silent speech' interface , to be used as an aid for the speech-handicapped, or as part of a communications system operating in silence-required or high-background noise environments. The article first outlines the emergence of the silent(More)
1. Introduction The magnetic resonance imaging (MRI) technique has been used for visualizing the geometry and dynamic behavior of the speech organs owing to its excellent imaging capability with no known harmful effects [1,2]. With most existing MRI scanners, subjects need to phonate in a supine posture, whereas normally they speak with the upper body held(More)
A physiological articulatory model has been constructed using a fast computation method, which replicates midsagittal regions of the speech organs to simulate articulatory movements during speech. This study aims to improve the accuracy of modeling by using the displacement-based finite-element method and to develop a new approach for controlling the model.(More)
A 3D cine-MRI technique was developed based on a synchronized sampling method [Masaki et al., J. Acoust. Soc. Jpn. E 20, 375-379 (1999)] to measure the temporal changes in the vocal tract area function during a short utterance /aiueo/ in Japanese. A time series of head-neck volumes was obtained after 640 repetitions of the utterance produced by a male(More)
Since Lieberman and Crelin (1971) postulated the theory that Neandertals ''could not produce the range of sounds that characterize human speech'', the potential speech capability of Neandertals has been the subject of hot debate. Lieberman and Crelin claimed that the development of a low laryngeal position was a necessary condition for the realization of a(More)
A simple normalization procedure was applied to point-parametrized articulatory data to yield quantitative speaker-general descriptions of "average" vowel postures. Articulatory data from 20 English and 8 Japanese speakers, drawn from existing x-ray microbeam database corpora, were included in the analysis. The purpose of the normalization procedure was to(More)
In Noh, a traditional performing art of Japan, extremely expressive voice quality is used to convey an emotional message. A periodicity of voice appears responsible for these special effects. Acoustic signals were recorded for selected portions of dramatic singing in order to study the acoustic effects of delicate voice control by a master of the Konparu(More)