DIRECTIONAL MICROPHONE ARRAY FOR HEARING AIDS

建议研究的长期目标是改善听力 在有噪音和混响的环境中使用。 采取方法是 助听器配件，使传统的助听器 对来自视线方向的声音比声音更敏感 从侧面和后面传来 一个3麦克风阵列， 处理以在观看方向10上产生方向灵敏度 已经设计了比侧射方向和后向方向大10到12dB。的 计划改进电路，建立6个实验模型。 助听器的选配方法 将被设计。 在第一阶段，实验模型将进行试点测试 中度和重度听力受损受试者在各种 信号和噪声环境，这些结果将用于设计和 在第二阶段进行全面的临床试验。

The long term objective of the proposed research is to improve hearing aids in environments with noise and reverberation. The approach is to develop a hearing aid accessory which makes traditional hearing aids much more sensitive to sounds coming from the look direction than to sounds coming from the side and rear. A 3-microphone array with signal processing to produce a directional sensitivity in the look direction 10 to 12 db greater than broadside and rear directions has been devised. The plan is to improve the circuit and to build 6 experimental models. Clinical methods for determining the efficacy of directional hearing aids will be devised. In Phase I the experimental models will be pilot tested with moderate and severely hearing impaired subjects in a variety of signal and noise environments and these results will be used to design and implement full scale clinical trials in Phase II.