论文标题
使用频率响应蒙版技术的非均匀FIR数字过滤库用于助听器申请：评论
Non-uniform FIR Digital Filter Bank for Hearing Aid Application Using Frequency Response Masking Technique: A Review
论文作者
论文摘要
助听器是一种电声设备，用于有选择地放大音频声音，目的是使言语对听力受损的人更加理解。过滤库是数字助听器的重要部分之一，可以调整每个过滤器的子带收益以补偿个人独特的听力损失模式。由于人类的看法基于对数尺度，因此非均匀的滤波器库的表现优于统一的滤波器库。非均匀档案库的主要优点是，它需要更少的子频带过滤器数量，因此导致硬件复杂性和成本较低。已经为助听器应用设计了这些不均匀的过滤库。本文旨在对使用频率响应蒙版（FRM）技术进行基于非均匀有限脉冲响应（FIR）数字滤清器库进行助听器应用程序进行审查。通过审查过滤器库，我们试图找到固定和可变频带滤波器库之间的差异，并深入了解哪种方法更适合匹配大多数常见的听力损失类型。已经回顾了涉及设计方法，理论计算方法和滤波器库仿真结果的论文。
Hearing aid is an electroacoustic device used to selectively amplify the audio sounds with an aim to make speech more intelligible for a hearing impaired person. Filter bank is one of the important parts of digital hearing aid where the sub band gains of each filter can be tuned to compensate an individuals unique hearing loss pattern. As the human perception is based on the logarithmic scale, nonuniform filter bank outperforms uniform filter bank. The main advantage of nonuniform filer bank is that it requires less number of sub-band filters, hence resulted in low hardware complexity and cost. Much effort has been devoted to design these nonuniform filter banks for hearing aid applications. This paper aimed to provide a review of previous researches based on nonuniform finite impulse response (FIR) digital filter bank for hearing aid application using frequency response masking (FRM) technique. By reviewing filter banks, we try to find the difference between fixed and variable band filter bank and to give an insight about which method is more suitable for matching most common types of hearing loss. Papers which involved methods of design, theoretical computation and simulation results of filter bank have been reviewed.
