Moreover, the phonemes across languages can be hierarchically organized in terms of articulatory features, as described by the International Phonetic Alphabet ( International Phonetic Association, 1999) ( IPA). The output of this process is the speech wave sound, which can be discretized and represented by a finite set of symbols: the phonemes. This interaction implies a precise control of a set of articulators (lips, tongue, and jaw) to dynamically modify the shape of the upper vocal tract ( Levelt, 1993). This complex process, that distinguishes us from other species, emerges as an interaction between the brain activity and the physical properties of the vocal system.
Discreet speech timer portable#
This novel electronic device represents an economic and portable option to the standard systems used to study the vocal tract movements.Īmong all species, humans are within the very few that generate learned vocalizations and are, by far, the species producing the more advanced ones ( Petkov and Jarvis, 2012). The current work not only assesses a relevant inquiry of the biology of language, but also demonstrates the performance of the experimental technique to monitor the displacement of the main articulators of the vocal tract while speaking. Furthermore, the signals of the transducers combined with the discretization strategy were used to drive a low-dimensional vocal model capable of synthesizing intelligible speech. Using a threshold strategy, the time traces of the transducers were converted into discrete motor coordinates unambiguously associated with the vocalized phonemes. In this work, this question is assessed by using Hall-effect transducers and magnets-mounted on the tongue, lips, and jaw-to track the kinematics of the oral tract during the vocalization of vowel-consonant-vowel structures. How the discrete phonemic identity is encoded in the continuous movements producing speech remains an open question for the experimental phonology. The sounds of all languages are described by a finite set of symbols, which are extracted from the continuum of sounds produced by the vocal organ.
Florencia Assaneo 1,2*, Daniela Ramirez Butavand 3, Marcos A.
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