通过结合绝对值和取决于水平的内部噪声来改进听力过器估计.
Toshio Irino1, Kenji Yokota1, Roy D Patterson2
1Faculty of Systems Engineering, Wakayama University, Japan.
Trends in hearing
|October 31, 2023
概括
本研究引入了一种改进的功率频谱模型 (PSM),通过结合绝对值和内部噪声来估计听力过器 (AF) 形状. 这提高了AF估计的准确性,特别是在低音量时.
科学领域:
- 听觉感知是一种听觉感知.
- 精神声学是一种精神声学.
- 信号处理 信号处理
背景情况:
- 听力过器 (AF) 形状估计传统上使用隙噪声 (NN) 掩盖和功率频谱模型 (PSM).
- 现有的方法在同时和前向掩盖范式中面临挑战.
- 对于精确的AF形状估计,需要改进,特别是在低音水平.
研究的目的:
- 通过改进功率频谱模型 (PSM) 来提高听觉波器 (AF) 形状估计.
- 调查将绝对值 (AT) 和取决于水平的内部噪声纳入PSM的影响.
- 为正常听力 (NH) 听众在各种频率和音量级别中改进AF估计.
主要方法:
- 在500,1000,2000和4000 Hz的正常听力 (NH) 听众中测量了NN值,重点关注低级别的掩饰器.
- 开发了一种新的PSM,其中包含压缩性波器 (cGC) 波器和三个非波器参数.
- 在PSM中明确表示绝对值 (AT) 和水平依赖的内部噪声.
主要成果:
- 拟议的PSM与cGC波器和非波器参数改善了在广泛的频率和级别的AF估计准确性.
- 观察到一个恒定的探测器信号噪声比 (),简化了后过.
- 使用ANSI标准的应用.
- 听力水平 - 0dB
- 对AT的功能改善了AF估计的噪音底部分布.
- 与水平相关的内部噪声在同时NN掩盖中减轻了非线性效应.
结论:
- 增强的PSM提供了更准确的听觉波器 (AF) 形状估计,特别是在接近绝对值 (AT) 的低音压水平.
- 该模型的改进适用性有利于精神声学研究和助听器信号处理.
- 显式建模AT和内部噪声有助于我们对听觉处理的理解.
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