耳声压预测从耳道反射率基于韦伯斯特号角方程的逆解
Reinhild Roden1, Tobias Sankowsky-Rothe1, Nick Wulbusch2,3
1Institut für Hörtechnik und Audiologie, Jade-Hochschule, Oldenburg, Germany.
The Journal of the Acoustical Society of America
|January 8, 2026
概括
准确的耳道模型对于个性化助听器至关重要. 这项研究增强了区域功能的估计,提高了耳道模型的精度,以更好地平衡入耳听力系统.
科学领域:
- 声学和生物声学学
- 信号处理 信号处理
- 听力科学 听力科学
背景情况:
- 个性化的耳道模型对于在耳内听力系统中开发有效的等分算法至关重要.
- 准确估计耳道区域功能是这些模型的关键要求.
研究的目的:
- 为了提高个体耳道区域功能的估计的准确性.
- 为了研究韦伯斯特角方程的逆解的最佳空间分辨率.
- 为了提高耳道传输功能的一维电声学模型的准确性.
主要方法:
- 利用有限差异近似的时间域反射率来反向解决韦伯斯特的角方程.
- 额外推算到高达3.5MHz的模拟输入阻抗,以提高空间分辨率 (0.1毫米).
- 根据带限输入阻抗调整低通波器的切断频率.
主要成果:
- 与几何参考相比,实现了更精确的耳道区域功能.
- 在耳道长度上确定了终端区域函数近似的强有力的标准.
- 通过使用经过验证的1D模型,成功复制了3D模拟和测量耳道传输阻抗.
结论:
- 这种精细的方法提供了更准确的耳道区域功能.
- 经过验证的1D电声模型有效地预测了耳道传输阻抗.
- 这种方法推进了用于听觉系统的个性化均等算法的开发.
相关概念视频
Anatomy of the Ear
11.1K
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
11.1K
Sound as Pressure Waves
4.4K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
The pressure fluctuation depends on the difference in displacements between the successive points in the...
4.4K
Echo
880
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
880
Perception of Sound Waves
5.4K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
5.4K
The Cochlea
50.5K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
50.5K
Sound Intensity Level
4.7K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.7K


