Investigating alternative forms of clear speech: The effects of speaking rate and speaking mode on intelligibility
Investigating alternative forms of clear speech: The effects of speaking rate and speaking mode on intelligibility
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DOI：
10.1121/1.1509432
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发表时间：
2002-11-01
影响因子：
2.4
通讯作者：
Braida, LD
中科院分区：
文献类型：
--
作者：
Krause, JC;Braida, LD
对于各种背景中的听力受损的听众来说，“清楚地”（并且缓慢地）说出的句子比“对话地”说出的句子明显更容易理解[Picheny，Durlach和Braida; J. Speech Hear. Res.28，96-103（1985）; Uchanski等人，J.言语听觉。Res. 39，494-509（1996）; Payton，Uchanski和Braida，J. Acoust.美国社会95，1581-1592（1994）]。然而，尚不清楚对于高度可理解的语音来说是否需要较慢的说话速率，或者是否存在以较快的速率（即，正常）费率。为了研究这个问题，研究人员要求具有丰富演讲经验的演讲者以缓慢、正常和快速的速度进行清晰的对话。引入了一种用于引出清晰语音的方法，该方法确保在这些说话速率中的每一个下获得尽可能清晰的语音。为了探索其他高度可理解的说话模式，说话者还记录了另外两种说话模式下的句子：柔和和响亮。清晰度测试表明，清晰的语音是唯一的说话模式，提供了一致的清晰度优势超过。会话式的演讲此外，清晰语音的优势被扩展到比以前报道的更快的说话速度。这些结果表明，清晰的语音有一些固有的声学特性，有助于其高清晰度，而不改变率。识别这些声学特性可以改进助听器的信号处理方案。(C)2002年美国声学学会。
Sentences spoken "clearly" (and slowly) are significantly more intelligible than those spoken "conversationally" for hearing-impaired listeners in a variety of backgrounds [Picheny, Durlach, and Braida; J. Speech Hear. Res. 28, 96-103 (1985); Uchanski et al., J. Speech Hear. Res. 39, 494-509 (1996); Payton, Uchanski, and Braida, J. Acoust. Soc. Am. 95, 1581-1592 (1994)]. However, it is unknown whether slower speaking rates are necessary for highly intelligible speech or whether an alternative form of clear speech exists at faster (i.e., normal) rates. To investigate this question, talkers with significant public speaking experience were asked to produce clear and conversational speech at slow, normal, and quick rates. A method for eliciting clear speech was introduced that ensured the clearest possible speech was obtained at each of these speaking rates. To probe for other highly intelligible speaking modes, talkers also recorded sentences in two other speaking modes: soft and loud. Intelligibility tests indicated that clear speech was the only speaking mode that provided a consistent intelligibility advantage over.. conversational speech. Moreover, the advantage of clear speech was extended to faster speaking rates than previously reported. These results suggest that clear speech has some inherent acoustic properties that contribute to its high intelligibility without altering rate. Identifying these acoustic properties could lead to improved signal-processing schemes for hearing aids. (C) 2002 Acoustical Society of America.