使用相对基本频率的时空指数捕捉声高功能的语音器内异质性
Jenny Vojtech1, Laura E Toles2, Daniel P Buckley1,3
1Department of Speech, Language, & Hearing Sciences, Boston University, MA.
Journal of speech, language, and hearing research : JSLHR
|August 19, 2025
概括
相对基本频率 (RFF) 变化,特别是时空指数 (STI),提供了一种比单独平均RFF值更客观的方法来表征高功能语音障碍. 这种先进的指标有助于区分不同的声高功能类型.
科学领域:
- 语音语言病理学 语言病理学
- 声音的声学分析.
- 声音障碍 声音障碍
背景情况:
- 高功能语音障碍很常见,但缺乏客观的特征.
- 相对基本频率 (RFF) 显示出潜力,但受到主体间变异性的限制.
- 传统的平均RFF测量可能无法完全捕捉到这些疾病的复杂性.
研究的目的:
- 调查RFF变化是否能提供超越传统RFF平均值的洞察力.
- 确定RFF可变性指标在区分声高功能类型中的临床实用性.
- 探索时空指数 (STI) 在语音障碍分析中的有效性.
主要方法:
- 收集了来自132名成年人的语音样本,分为三个组:语音创伤性声高功能 (PVH),非语音创伤性声高功能 (NPVH) 和对照组.
- 计算的RFF平均值,RFF标准偏差和RFF时空指数 (STI).
- 用了换ANOVA和多项逻辑回归来进行群体差异化,在一个独立的测试集上进行了验证.
主要成果:
- 平均RFF和STI测量都显示出显著的群体差异,与RFF标准偏差不同.
- 整合平均值和STI措施改善了分类模型,即使调整了人口统计数据.
- 接收器操作特征分析显示,对组成员的分类准确度 (AUC = 0.78) 是可以接受的.
结论:
- RFF变化,特别是STI,捕捉了微妙的声高功能特征,这些特征被平均指标所遗漏.
- 先进的RFF可变度指标对于客观的语音障碍特征具有重要的临床价值.
- 这些发现支持使用RFF可变性来改善对高功能语音障碍的诊断和理解.
更多相关视频
相关概念视频
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
1.2K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.2K
Aliasing
227
Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
227
Frequency-Domain Interpretation of PD Control
176
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
The proportional control gain, combined with the...
176
Facial Feedback Hypothesis
244
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
244
Variability: Analysis
190
Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
The range is a simple measure of variability, indicating the difference between the highest and...
190


