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The effect of code-mixing on accent identification accuracy

机译：混码对口音识别精度的影响

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摘要

We investigate whether accent identification is more effective for English utterances embedded in a different language as part of a mixed code than for English utterances that are part of a monolingual dialogue. Our focus is on Xhosa and Zulu, two South African languages for which code-mixing with English is very common. In order to carry out our investigation, we extract English utterances from mixed-code Xhosa and Zulu speech corpora, as well as comparable utterances from an English-only corpus by Xhosa and Zulu mother-tongue speakers. Experiments using automatic accent identification systems show that identification is substantially more accurate for the utterances originating from the mixed-code speech. These findings are supported by a corresponding set of perceptual experiments in which human subjects were asked to identify the accents of recorded utterances. We conclude that accent identification is more successful for these utterances because accents are more pronounced for English embedded in mother-tongue speech than for English spoken as part of a monolingual dialogue by non-native speakers. Furthermore we find that this is true for human listeners as well as for automatic identification systems.
机译：我们调查口音识别对于嵌入到另一种语言（作为混合代码的一部分）的英语话语是否比单语对话的英语话语更有效。我们的重点是Xhosa和Zulu，这两种南非语言非常常见，它们会与英语进行代码混合。为了进行调查，我们从混合代码的Xhosa和Zulu语音语料库中提取了英语话语，并从Xhosa和Zulu母语的英语仅语料库中提取了可比较的话语。使用自动重音识别系统的实验表明，对于源自混合代码语音的话语，识别要更加准确。这些发现得到了相应的一组感知实验的支持，在该实验中，要求人类受试者识别所记录话语的重音。我们得出结论，对于这些话语，口音识别更为成功，因为与母语为非母语的人进行单语对话的一部分所讲的英语相比，嵌入母语的英语的口音更为明显。此外，我们发现这对于人类听众以及自动识别系统都是正确的。

著录项

  • 来源
    《Computer speech and language》 |2009年第4期|435-443|共9页
  • 作者

    Thomas Niesler; Febe de Wet;

  • 作者单位

    Department of Electrical and Electronic Engineering, University of Stellenbosch, Stellenbosch, South Africa;

    Centre for Language and Speech Technology, University of Stellenbosch, Stellenbosch, South Africa;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    accent identification; code-mixing;

    机译：口音识别;代码混合;

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