现代助听器反馈啸叫抑制的实用技术

摘要

The feedback(FB) squealing suppression technologies of modern hearing aids include two types of adaptive cancellation, static initialization plus dynamic evaluation and only dynamic evaluation, as well as incorporated technologies for improving their performances, delay, highband filtering, frequency shift and detection, etc. This paper describes the essential concepts and the practical working principles related to these technologies, summaries applied approaches of various technologies.%现代助听器反馈啸叫抑制技术包括静态初始化加动态估计和仅动态估计两类自适应相消（adaptive cancellation），以及为了改进其性能而并入的延时、高通滤波、频移和检测等技术。本文阐述了与这些技术有关的基础概念和实际工作原理，总结了不同技术的应用途径。