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Discriminative and generative approaches for long- and short-term speaker characteristics modeling: Application to speaker verification.

机译:长期和短期说话者特征建模的判别和生成方法:在说话者验证中的应用。

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摘要

The speaker verification problem can be stated as follows: given two speech recordings, determine whether or not they have been uttered by the same speaker. Most current speaker verification systems are based on Gaussian mixture models. This probabilistic representation allows to adequately model the complex distribution of the speech frames. It however represents an inadequate basis for discriminating between speakers, which is the key issue in the area of speaker verification. In the first part of this thesis, we attempt to overcome these difficulties by proposing to combine support vector machines with two generative approaches based on Gaussian mixture models. In the second part of this thesis, we present a new approach to modeling the speaker's long-term prosodic and spectral characteristics. This novel approach is based on continuous approximations of the prosodic and cepstral contours. Finally, we perform a scores fusion between systems based on long- and short-term speaker features.
机译:说话者验证问题可以描述如下:给定两个语音记录,确定它们是否由同一说话者发出。当前大多数说话人验证系统都是基于高斯混合模型。这种概率表示允许对语音帧的复杂分布进行充分建模。然而,这代表了不充分的区分说话者的基础,这是说话者验证领域的关键问题。在本文的第一部分中,我们试图通过将支持向量机与基于高斯混合模型的两种生成方法相结合来克服这些困难。在本文的第二部分,我们提出了一种对说话者的长期韵律和频谱特征进行建模的新方法。这种新颖的方法是基于韵律和倒谱轮廓的连续近似。最后,我们基于长期和短期说话者功能在系统之间进行分数融合。

著录项

  • 作者

    Dehak, Najim.;

  • 作者单位

    Ecole de Technologie Superieure (Canada).;

  • 授予单位 Ecole de Technologie Superieure (Canada).;
  • 学科 Artificial Intelligence.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 164 p.
  • 总页数 164
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 人工智能理论;
  • 关键词

  • 入库时间 2022-08-17 11:38:27

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