提高听力助听器使用者的选择性注意力跟踪:降噪和非线性补偿的作用
Johanna Wilroth1, Emina Alickovic2,3, Martin A Skoglund2,3
1Automatic Control, Department of Electrical Engineering, Linköping University, Linköping 581 83, Sweden Johanna.wilroth@liu.se.
eNeuro
|January 29, 2025
概括
具有降噪功能的助听器通过增强对目标语音的神经反应来改善听力受损者的语音理解. 先进的EEG分析通过提高信号清晰度来进一步完善这一点.
科学领域:
- 神经科学是一个神经科学.
- 听力学 听力学是指听力学.
- 信号处理 信号处理
背景情况:
- 听力障碍 (HI) 显著影响社会互动,特别是在杂的环境中,因为语音理解有困难.
- 带有降噪 (NR) 的助听器 (HA) 提供了部分解决方案,但
- 尾酒派对的问题
- 持续存在,阻碍在背景噪音中注意特定的语言.
研究的目的:
- 研究HAs中NR对HI听者的语音处理中的神经效应.
- 评估一种先进的信号处理方法,以补偿电脑电图 (EEG) 信号中的非线性,以改进神经语音跟踪.
- 评估NR和高级EEG分析对神经对噪音中的言语反应的综合影响.
主要方法:
- 患有HI的参与者在听到面具语音和噪音的情况下,在听到目标语音时,使用了NR激活和禁用HA.
- 记录了EEG数据,并分析了时间响应功能,以评估目标和面具语音的神经跟踪.
- 对EEG数据应用了一种新的信号处理方法,以弥补非线性并改善信号噪声比 (SNR).
主要成果:
- 在HA中NR激活显著增强了对目标语言的神经反应 (N1和P2组件),特别是在额头和中部头皮区域.
- 先进的EEG分析方法改善了SNR,并揭示了更精确的相关语音的神经跟踪,特别是在左额头区域.
- NR激活协同增强了EEG分析方法的有效性,导致神经反应更强,数据变异减少.
结论:
- 在HA中NR显然改善了HI听众的语音神经跟踪.
- 新的EEG分析方法对NR效应敏感,为评估听觉干预提供了一个有前途的工具.
- 这项研究提供了NR的神经效益的见解,并提出了增强HA技术的途径.
相关概念视频
01:31Hearing
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
01:16Characteristics of Practical Op Amps
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
01:23Parallel Resonance
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
01:25Active Filters
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
01:17Design Example: Vintage Mixing Console
A sound engineer at a music company recently encountered a problem. The output from their newly acquired studio's vintage mixing console was too low for the requirements of modern recording equipment. To rectify this situation, the engineer decided to design an audio pre-amplifier using an operational amplifier (op-amp) to boost the signal level.
The specifications for the pre-amplifier were clear. It needed to amplify the audio signal by a factor of 10, have an input impedance above 10...
The specifications for the pre-amplifier were clear. It needed to amplify the audio signal by a factor of 10, have an input impedance above 10...
01:17Auditory Perception
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...