Narrow-Band Active Noise Reduction for DPOAE Measurement

用于 DPOAE 测量的窄带主动降噪

• 批准号: 6485483
• 负责人: ROBERT J KLINE-SCHODER
• 金额: $ 10.4万
• 依托单位: CREARE, LLC
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-20 至 2003-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6485483
• 关键词: artificial intelligence; bioengineering /biomedical engineering; biomedical equipment development; clinical research; computer program /software; hearing tests; human subject; measurement; noise; otoacoustic emission; sound frequency

DESCRIPTION (provided by applicant): The aim of this project is to enable accurate acquisition of distortion product otoacoustic emission (DPOAE) measurements in relatively high noise environments for use in hearing evaluations and screening. DPOAE measurements have been shown to be an effective and efficient method for screening infant, children, and adult hearing. Environmental noise, however, has been shown to adversely affect the ability to successfully obtain DPOAE measurements, especially at frequencies below 1500 Hz. We will achieve our aim by developing a narrow-band, adaptive active noise reduction system that will seamlessly augment existing DPOAE measurement protocols. Our innovation will supplement existing DPOAE measurement systems with both low-cost acoustic hardware and advanced signal processing techniques. By reducing background noise levels in a narrow frequency band near the DPOAE test frequencies, we will enable higher signal-to-noise ratio DPOAE measurement sequences. The increased SNR will result in the ability to obtain DPOAE measurements in relatively high noise environments such as the newborn intensive care unit and nursery, offices of pediatricians, schools without special audiology facilities, field hospitals, and remote or mobile clinics.

描述(由申请人提供)：该项目的目的是使 失真产物耳声发射(DPOAE)的精确捕获 用于听力的相对高噪声环境中的测量 评估和筛选。DPOAE测量已被证明是一种 有效、高效的婴幼儿和成人筛查方法 听证。然而，环境噪音已被证明会对环境造成不利影响 能够成功获得DPOAE测量，特别是在频率上 低于1500赫兹。 我们将通过开发一种窄带、自适应有源噪声来实现我们的目标 简化系统，将无缝增强现有的DPOAE测量 协议。我们的创新将补充现有的DPOAE测量系统 拥有低成本的声学硬件和先进的信号处理技术。 通过降低DPOAE附近窄频带的背景噪声水平 测试频率，我们将启用更高的信噪比DPOAE测量 序列。增加的信噪比将导致获得DPOAE的能力 在相对高噪声环境中的测量，如新生儿 重症监护病房和托儿所，儿科医生办公室，没有 专门的听力学设施、野战医院和偏远或流动诊所。