Department of Audiologopedics, Institution for Scandinavian studies and Linguistics, University of Copenhagen, Copenhagen, Denmark.
Logoped Phoniatr Vocol. 2020 Jul;45(2):91-96. doi: 10.1080/14015439.2019.1637455. Epub 2019 Aug 13.
Sustained vowel phonation is a common patient task in the assessment of voice disorders. Free from articulatory influence, it allows for acoustic voice analyses unfeasible for connected speech. Previous research indicates that the fundamental frequency () of a self-chosen vowel is not necessarily representative to mean of the same subject's connected speech. The purpose was to examine mean in text reading and to compare it with sustained vowel phonation with and without a sentence-frame. It was hypothesized, that a short phrase of context embedding the prolonged vowel would affect mean of the vowel to be closer to that of text reading. Thirteen vocally healthy women, age 22-27 was audio recorded during three tasks: reading of a standard text, producing an isolated, sustained /a/ and repeating three times a frame sentence with an imbedded /a/ and the third time to sustain the /a/. Mean of the three conditions was analyzed by means of the Praat computer program. The isolated vowel condition differed significantly from the mean of the sentence-framed one, the latter being closest to mean of the reading task. The isolated vowel condition also differed significantly from text reading. The difference in mean between sentence-framed vowel and text reading was not significant. Data support that the use of a sentence-frame is helpful to get a client's elicited from sustained vowel production in voice assessments more representative to that of text reading as compared to an isolated vowel.
持续元音发声是评估嗓音障碍的常见患者任务。它不受发音的影响，因此可以进行无法用于连贯言语的声学语音分析。先前的研究表明，自我选择的元音的基频（）不一定代表同一受试者的连贯言语的平均值。本研究旨在检查朗读文本中的平均值，并将其与带和不带句子框架的持续元音发声进行比较。假设，将延长的元音嵌入在短的语境短语中，会影响元音的平均值，使其更接近朗读文本的平均值。13 名嗓音健康的女性（年龄 22-27 岁）在三种任务中进行了音频录制：朗读标准文本、产生孤立的、持续的/a/音，并重复三遍带有嵌入/a/的句子框架，第三遍持续发/a/音。使用 Praat 计算机程序分析三种条件下的平均值。孤立元音条件与带句子框架的条件显著不同，后者与朗读任务的平均值最接近。孤立元音条件也与朗读任务显著不同。句子框架元音与朗读文本之间的平均值差异不显著。数据支持使用句子框架有助于从持续元音发声中获得患者的基频，使其在嗓音评估中比孤立元音更能代表朗读文本。
