Vital capacity & airflow measurement for voice evaluation: A vortex whistle system

肺活量

• 批准号: 10737248
• 负责人: Jordan Alexander Awan
• 金额: $ 65.68万
• 依托单位: UNIVERSITY OF CENTRAL FLORIDA
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2028-07-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10737248
• 关键词: Abnormal coordination; Acoustics; Address; Air; Air Movements; Area; Automobile Driving; Benchmarking; Calibration; Characteristics; Child; Clinic; Clinical; Computer Models; Computer software; Computers; Cost Measures; Data; Detection; Development; Devices; Disease; Elderly; Electronics; Engineering; Equipment; Evaluation; Frequencies; Goals; Gold; Home; Individual; Investigation; Language; Larynx; Longevity; Maps; Measurement; Measures; Medial; Methodology; Methods; Modeling; Modification; Monitor; Operative Surgical Procedures; Outcome; Outcome Measure; Output; Paralysed; Pathologist; Patients; Periodicals; Phonation; Play; Production; Research; Respiratory System; Role; Science; Series; Signal Transduction; Speech; Spirometry; Statistical Methods; Surveys; Syringes; System; Techniques; Teletherapy; Testing; Time; Translating; Treatment outcome; Tube; United States; Validation; Variant; Vital capacity; Voice; Voice Disorders; Work; clinical application; clinical practice; computerized; cost; cost effective; design; human subject; improved; innovation; instrument; instrumentation; laboratory experiment; manufacture; mobile computing; physical model; platform-independent; portability; pressure; research clinical testing; respiratory; response; simulation; standard measure; success; technology platform; tool; trial comparing; vocal cord; young adult

PROJECT SUMMARY/ABSTRACT Comprehensive voice evaluation requires assessment of the essential subsystems, including the respiratory subsystem. However, surveys of assessment and treatment practices by speech-language pathologists (SLPs) both in and outside of the United States indicate that respiratory and aerodynamic measures are rarely used in the assessment of voice disorders, mainly due to lack of access to expensive equipment. The proposed series of studies seeks to overcome this serious deficiency in the voice assessment practice of SLPs by combining concepts and techniques from clinical voice science, acoustics, statistical methods, and aerodynamic engineering. The result will provide accurate, low-cost measures of respiratory capacity and phonatory airflow via the development and validation of a uniquely designed vortex whistle and accompanying signal analysis software. A vortex whistle is a non-mechanical, non-electronic device that provides a whistle frequency that varies proportional to the inlet airflow rate. When frequency is mapped to the inlet airflow rate, the area under the frequency-flow curve obtained from the vortex whistle can be used as an estimate of volume. Rather than a replacement for spirometry and other pneumotachometer-based aerodynamic instrumentation, our vortex whistle design is optimized to obtain accurate measures of vital capacity (VC) and mean phonatory airflow (PA) in sustained voicing that have important application to the assessment of respiratory and laryngeal function essential for effective voice production. The vortex whistle can be manufactured for a tiny fraction of the cost of pneumotachometer-based or other aerodynamic instrumentation. In addition, the platform-independent analysis software can be used with low-cost computers and can be easily translated to mobile platforms. The specific goals of this project are to: (1) develop a more complete understanding of the acoustic- aerodynamic capabilities of the vortex whistle via computational aeroacoustic (CAA) modeling, (2) assess hardware and software analysis modifications that can optimize the ability to provide accurate VC and PA estimates from the vortex whistle via physical aeroacoustic (PAA) modeling that incorporates an actuated syringe methodology for the production of highly controlled and repeatable airflows and volumes, (3) compare and correlate measures of VC and PA obtained via the vortex whistle system (VWS) with high-quality pneumotachometer-based aerodynamic instrumentation including the Koko SX 1000 spirometer and the Phonatory Aerodynamic System (PAS), (4) correlate voicing onset frequency-flow characteristics with underlying driving pressure (Psub), and (5) demonstrate the VWS as a noninferior alternative to “gold” standard pneumotachometer-based instrumentation for measures of VC and PA in groups of nondysphonic subjects across the lifespan and as a treatment outcome measure in a group of unilateral vocal fold paralysis (UVFP) patients pre- and post-surgical medialization.

项目摘要/摘要 全面的嗓音评估需要评估基本的子系统，包括呼吸系统， 子系统然而，由言语语言病理学家（SLP）进行的评估和治疗实践的调查 在美国国内外的研究表明，呼吸和空气动力学的测量方法很少用于 语音障碍的评估，主要是由于缺乏昂贵的设备。推荐的系列 的研究试图克服这个严重的缺陷，在语音评估实践的SLP结合 来自临床嗓音科学、声学、统计方法和空气动力学的概念和技术 工程.其结果将提供准确，低成本的措施呼吸能力和发声气流 通过开发和验证独特设计的涡流哨和伴随的信号分析 软件涡流哨是一种非机械、非电子装置，其提供的哨声频率 与入口气流速率成比例地变化。当频率映射到入口气流速率时， 从涡流哨获得的频率-流量曲线可用作体积的估计。而不是 我们的Vortex是肺量计和其他基于呼吸速度计的空气动力学仪器的替代品， 优化了口哨设计，以获得肺活量（VC）和平均发声气流（PA）的准确测量值 在持续发声中对呼吸和喉功能的评估具有重要的应用 这是有效发声的关键。涡流哨的制造成本仅为 基于呼吸速度计或其他空气动力学仪器。此外，平台独立 分析软件可以与低成本计算机一起使用，并且可以容易地转换到移动的平台。 该项目的具体目标是：（1）发展对声学的更完整的理解- 通过计算气动声学（CAA）建模，评估涡哨的气动性能，（2）评估 硬件和软件分析修改，可以优化提供准确的VC和PA的能力 通过物理航空声学（PAA）建模，从涡哨中估计出的结果， 用于生产高度受控和可重复的气流和体积的注射器方法，（3）比较 并将通过涡流哨系统（VWS）获得的VC和PA测量值与高质量 基于呼吸速度计的空气动力学仪器，包括Koko SX 1000肺活量计和 发声空气动力学系统（PAS），（4）将发声起始频率流特征与 潜在驱动压力（Psub），（5）证明VWS作为“黄金”的非劣性替代品 标准的基于呼吸速度计的仪器，用于测量非呼吸困难组的VC和PA 受试者在整个生命周期中的治疗效果，并作为一组单侧声带麻痹的治疗结果指标 （UVFP）患者术前和术后内侧化。