NOISE REDUCTION FOR HEARING AIDS

助听器降噪

• 批准号: 2126969
• 负责人: JAMES M KATES
• 金额: $ 22.76万
• 依托单位: CUNY GRADUATE SCH AND UNIV CTR
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1997-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2126969
• 关键词: audiometry; auditory discrimination; auditory threshold; biomedical equipment development; computer simulation; hearing aids; human subject; human therapy evaluation; loudness; noise; sound frequency; speech recognition

The overall goal of the proposed research is to improve speech intelligibility in noise for the hearing-impaired. The specific aims are to develop and evaluate and adaptive microphone array. The array will be the size of a pencil, and could be hand-held or worn on the side of a pair of eyeglasses. The microphone array will greatly improve the ability of hearing impaired listeners to communicate effectively under conditions of noise and reverberation that now cause severe difficultly, including meeting rooms, lecture halls, restaurants, churches, or in large groups of people. The research involves the development and testing of the adaptive array. The array geometry and signal processing will first be stimulated on a computer. The array will then be built and tested under realistic conditions of noise in a reverberant room. Physical testings will be based on measuring the improvement in the signal-to-noise ratio (SNR) for the array in comparison with an existing hearing-aid design. Ineligibility testing will be based on determining speech recognition as a function of SNR for different conditions of array usage and room reverberation, again in comparison with existing hearing-aid technology. The ability of the adaptive array to reject noise in a reverberant room will thus be determined and directly related to the improvements obtained in speech intelligibility.

拟议研究的总体目标是改善语音 听力障碍者对噪音的清晰度。 具体目标是 开发和评估自适应麦克风阵列。 该数组将 有铅笔大小，可以手持或佩戴在侧面 一副眼镜。 麦克风阵列将大大提高 听力受损的听众在以下情况下有效沟通的能力 现在造成严重困难的噪音和混响状况， 包括会议室、演讲厅、餐厅、教堂或 大群人。 该研究涉及自适应阵列的开发和测试。 阵列几何结构和信号处理将首先在 电脑。 然后将在实际情况下构建和测试阵列 混响室中的噪声条件。 物理测试将 基于测量信噪比 (SNR) 的改善 该阵列与现有助听器设计进行比较。 资格测试将基于确定语音识别为 不同阵列使用和房间条件下的 SNR 函数 混响，再次与现有助听器技术进行比较。 自适应阵列抑制混响室噪声的能力 因此将被确定并与所获得的改进直接相关 在言语清晰度方面。