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Copyright of Prace Jezykoznawcze is the property of University of Warmia & Mazury in Olsztyn and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Logopaedica Lodziensia is the property of Wydawnictwo Uniwersytetu Lodzkiego and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The purpose of this research is to introduce an acoustic camera method to analyze nasality in speech. The input information is generated using an acoustic camera device composed of a 16-channel audio recorder with a microphone array, a high-speed video camera, and Carstens articulograph (model AG500). The linearly constrained minimum variance algorithm is used to provide illustrations of the spatial acoustic field distribution. Acoustic pressure distribution is determined as related to the location of oral, nasal, and oronasal resonances, as well as the root mean square value of the pressure. Durations of particular types of resonances activated in the course of speech sound production are also specified. An example application of the method is discussed for Polish nasalized vowels. The internal structure of the vowels is heterogeneous and involves alternate or simultaneous activation of oral and nasal resonances. The order of appearance of these resonances and their percentage share in the realization of the vowels is determined based on the spatial distribution of the acoustic field. The vowels' structure is demonstrated to be even more complex than suggested in former studies. Furthermore, the proportion of nasality is found to vary significantly between the vowels [ɛ w ̃ ] and [ɔ w ̃ ]. [ABSTRACT FROM AUTHOR]

This paper discusses the subject of pronunciation visualization, based on methodologies in experimental phonetics. It presents a brief survey of major Polish instrumental research into articulation, focusing primarily on contemporary dynamic visualizations using electromagnetic articulography. The author's own investigations were conducted using an AG 500 articulograph, a device which records and visualizes the working and movement of the articulatory organs. Two speakers were recorded: one with standard pronunciation and the other with articulation defects. A multi-specialist team prepared vocal tract models, taking into account the speaker's anatomical conditions as recorded with the articulograph, video recordings, and photographs. Articulographic data enabled the preparation of pronunciation animations of 45 words, which show the standard realization of all vowels and consonants of Polish, and eight animations of non-standard articulation. [ABSTRACT FROM AUTHOR]