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A study on auditory aiding by digital hering aid and an efficient adding method of the visual/tactile information

数字助听器听觉辅助及视觉/触觉信息高效添加方法研究

基本信息

批准号：
05650358
负责人：
UEDA Yuichi
金额：
$ 1.22万
依托单位：
Kumamoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

项目摘要

Brief summary is as follows.Hearing aid : We proposed a composite compression filtering method which implemented the spectral compression in the waveform processing. The syllabic preference tests and the evaluation tests on suond quatilty were carried out by the sensorineural hearing impaired, where a digital hearing aid to realize the method in real-time has been used. As result, the favorable results were obtained in comparison with the conventional multiband compression.On the speech feature extractions : A spectral normalization, its vowel vector representation and a speech features extraction from spectral figures were proposed in order to trasmit the phonemic information via non-auditory sensory systems. The effects of its normalization was confirmed by the identification test of vowels uttered by many speakers, where a vibro-tactile display has been used. The speech features were used in the visual discrimination test and then its effects became clear.Prosody and its electrotactile image : Te identification tests on the accent types of words were carried out using an electrotactlile representation. It showed that it was possible to transmit the prosodic image similar to auditory one by taking account of both a conversion the voice pitch into the electrical pulse train and an addition of the speech intensity.A speech feature extraction system : A real-time speech feature extraction system was developed with dual DSP chips and the above mentioned various processings were realized.On this study, we have investigated the speech perception using an individual system, that is, a hearing aid, a tactile device and so on. The effects in the case using those systems simultaneously could not be become clear. In future, we will evaluate such effects systematically, based on the experimental results, the proccesing methods and the systems obtained in this study.

主要内容如下：1.提出了一种复合压缩滤波方法，在波形处理中实现了频谱压缩。对感音神经性听力障碍者进行音节偏好测试和音质评价测试，并使用数字助听器实时实现该方法。在语音特征提取方面，提出了一种谱归一化方法及其元音向量表示方法和一种从谱图中提取语音特征的方法，以实现音素信息通过非听觉感觉系统的传递。许多说话者的元音识别测试证实了其标准化的效果，其中使用了振动触觉显示器。语音特征用于视觉辨别测试，其效果变得清晰。韵律及其电触觉图像：使用电感表征对单词重音类型进行TE识别测试。语音特征提取系统：利用双DSP芯片开发了实时语音特征提取系统，并实现了上述各种处理。在本研究中，我们使用单独的系统，即助听器、触觉设备等，对语音感知进行了研究。在同时使用这些系统的情况下，其影响尚不清楚。今后，我们将根据本研究的实验结果、处理方法和系统，对这些效果进行系统的评估。