数字助听器的硬件实现
文献类型：学位论文
| 作者 | 李强 |
| 学位类别 | 博士 |
| 答辩日期 | 2009-05-22 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 声学研究所 |
| 关键词 | 数字助听器 双核DSP助听器芯片 双通道WDRC 消噪 |
| 其他题名 | the realization of digital hearing aid |
| 学位专业 | 信号与信息处理 |
| 中文摘要 | 数字助听器的研发技术不断进步，近来推出的双核语音处理芯片将成为下一代助听器产品的核心。本文亦是在一款双核助听器专业处理芯片开发平台的基础上，展开对整个数字助听器系统的设计。结合听觉生理学和先进的语音信号处理技术，本文对数字助听器的软硬件开发进行了深入的探索与实践。 本文介绍的数字助听器设计包括硬件设计和部分算法研究，其中硬件电路设计较为简单。在充分调研和比较后，本文完成了对助听器各关键器件的选型，并对所选用的双核语音处理芯片进行了外围电路设计。在语音处理算法方面，本文主要讨论双通道WDRC和综合降噪等数字助听器所必须算法的各个处理模块在双核芯片上的分配及实现。同时，本文在助听器芯片上实现了音量调节、提示音、电池报警、程序选择、开机延迟等一系列辅助功能，实现了一个较为完整的数字助听器系统。 根据患者的听力损失曲线，可使用我们设计的验配软件调节频响参数来对患者进行听力补偿，并将补偿结果下载到助听器芯片，方便助听器用户达到满意的使用效果。 我们将在助听器语音处理算法上面不断努力改进，向国际先进水平看齐。希望通过我们的努力，使中国消费者能够获得技术先进、价格合理的数字助听器产品。 |
| 英文摘要 | The technology of developing digital hearing aids makes incessant progress, and the dual-core professional DSP released lately will be the core of next generation product. This paper also makes a dual-core professional DSP as the core to develop the whole digital hearing aids system. Combined auditory physiology with speech signal processes tecnology, this paper presents a comprehensive development on hardware and software of digital hearing aids. This article describes the design of digital hearing aids, including the hardware circuits and part of the algorithms, in which hardware circuit design is relatively simple. With full research and comparison, we have selected the key devices of the hearing aid, and completed the external circuit design of the professional dual-core DSP. For the voice processing algorithms, this paper focused on the algorithms of two-channel WDRC and noise reduction for digital hearing aids, and the distribution of their various Processing modules on the parallel chip. In addition, we have realized a series of auxiliary functions on the chip, such as adjusting the volume, tone, battery alarm, the program of selection, booting delay and fitting software, and formed a completed system for digital hearing aids. Based on the hearing loss curves of a patient, we can use our fitting software to adjust the frequency response parameter, in order to compensate the patient’s hearing loss. Then we download it to the chip, so that patients can use our hearing aids appropriately. We will continuously improve our voice processing algorithms to make our hearing aids better and better. Hope that with our efforts, Chinese consumers can use international advanced technology of hearing aid products at reasonable prices. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 74 |
| 源URL | [http://159.226.59.140/handle/311008/408]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 李强. 数字助听器的硬件实现[D]. 声学研究所. 中国科学院声学研究所. 2009. |
入库方式： OAI收割
来源：声学研究所
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