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CFS: Time-frequency representations of acoustic signals based on redundant wavelet methodologies.

机译:CFS:基于冗余小波方法的声音信号的时频表示。

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摘要

In this dissertation, we develop high quality representations for acoustic signals based on wavelet methodologies. These representations, the Cardinal Framelet Synthesis (CFS) representations , use wavelets in a redundant context to improve the ability to localize signal information and to suppress time-dependent artifacts that are typical of non-redundant, e.g., orthogonal, representations. The basic building blocks of the CFS representations are redundant wavelet constructions, known in the literature as framelets, which we have generalized to the framelet-packet setting. We have developed for this purpose new framelet systems based on interpolating refinable functions.; A significant component is the development of CFS based algorithms for acoustic signal denoising. We present the results of extensive numerical experimentation in CFS denoising with respect to a large collection of acoustic signals from a variety of sources. The CFS denoising algorithms tend to exhibit fewer artifacts and distortions in the recovered signals compared to orthogonal-based denoising methods.
机译:在本文中,我们基于小波方法开发了高质量的声信号表示。这些表示法,即基本框架合成(CFS)表示法,在冗余上下文中使用小波来提高定位信号信息的能力,并抑制非冗余(例如正交)表示法所依赖的时间相关伪像。 CFS表示的基本构建块是冗余小波构造,在文献中称为“框架”,我们已将其推广到框架-数据包设置。为此,我们开发了基于内插可优化函数的新框架系统。一个重要的组成部分是基于CFS的声学信号降噪算法的开发。我们针对大量来自各种来源的声音信号,提供了在CFS去噪中进行大量数值实验的结果。与基于正交的降噪方法相比,CFS降噪算法在恢复的信号中倾向于表现出更少的伪影和失真。

著录项

  • 作者

    Parker, Steven T.;

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Computer Science.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 204 p.
  • 总页数 204
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术、计算机技术;
  • 关键词

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