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首页> 外文学位 >A.U.R.A.L. Audible Ultrasonic Realistic Artificial Larynx: An Audible Ultrasound Electrolarynx.
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A.U.R.A.L. Audible Ultrasonic Realistic Artificial Larynx: An Audible Ultrasound Electrolarynx.

机译：A.U.R.A.L.可听超声现实的人工喉：可听超声电喉。

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摘要

Every year, many thousands of people worldwide lose the ability to speak due to receiving a laryngectomy, typically for treatment of cancer. At some point in their recovery, most will use an electrolarynx to recover their ability to speak. Typical electrolarynxes utilize a piston to strike a disc pressed to the patient's neck which delivers a pressure wave into the soft tissue. This pressure wave mechanically couples with the vocal tract and generates the fundamental frequency necessary for creating vowels without which speech is not possible.;Commonly available electrolarynxes suffer from poor frequency control due to the nonlinear character of their impulse driver. They also create a great deal of "self-noise" which is distracting to listeners and makes using voice communication systems difficult.;We propose a novel electrolarynx implementation which utilizes two interfering ultrasonic waves to generate a fundamental frequency in the vocal tract required for speech restoration. The device is light weight, compact, inexpensive, and offers excellent control of all aspects of the output waveform. In addition, as the primary waveforms are above human hearing, there is little "self-noise" that can be heard by listeners and most communications devices filter such noise as part of their standard digitization process.;This device offers the potential to greatly improve the lives of those who have lost their voices and must rely on technology to allow them to communicate in the most efficient manner.
机译：每年，由于接受喉切除术（通常用于治疗癌症），全世界成千上万的人失去了说话的能力。在恢复的某个时刻，大多数人将使用电喉来恢复其说话能力。典型的电喉利用活塞撞击压在患者颈部的椎间盘，从而将压力波传递到软组织中。该压力波与声道机械耦合，并生成创建元音所需的基本频率，如果没有该基本频率，则无法进行语音。由于脉冲驱动器的非线性特性，普通可用的电喉因其频率控制差而受苦。它们还会产生大量的“自噪声”，这会分散听众的注意力，并使使用语音通信系统变得困难。；我们提出了一种新颖的电喉实施方案，该方案利用两个干扰超声波在语音所需的声道中产生基本频率恢复。该设备重量轻，结构紧凑，价格便宜，并且可以很好地控制输出波形的各个方面。另外，由于主要波形在人耳之上，因此听众几乎听不到“自噪声”，并且大多数通信设备将此类噪声作为其标准数字化过程的一部分进行过滤。失去声音并必须依靠技术使他们以最有效的方式进行沟通的人们的生活。

著录项

  • 作者

    Mills, Patrick M.;

  • 作者单位

    The George Washington University.;

  • 授予单位 The George Washington University.;
  • 学科 Engineering Biomedical.;Health Sciences Speech Pathology.;Physics Acoustics.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 172 p.
  • 总页数 172
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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