Departmental Bulletin Paper アメリカテレビニュース英語の音声特性 : 音響分析から
Some Phonetic Characteristics Observed in American Broadcast News : Based Upon Acoustic Analyses

山根, 繁

It is known that speech styles in English vary greatly depending upon the formality level of various speech situations. The formality level of broadcast news as well as public speeches is, in general, considered to be high. Using research conducted with the aid of an acoustic speech analyser called Praat, this paper demonstrates that some phonetic characteristics typically observed in casual speech also appear in American TV news English. By examining both segmental and suprasegmental aspects of broadcast news English, it became clear that 1) such phonetic phenomena as elision, assimilation, nasal release, and linking are quite common in broadcast English, 2)stress-timed rhythm is present in newscasters' speech, though its isocronism was not confirmed, 3)the use of lower pitch range is relatively stable, while there are variations in the use of higher pitch range, and 4)the pause ratio in news read by American anchorpeople is lower than that in news read by Japanese news announcers.

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