便携式聋哑人语音表达系统的设计

发布时间：2019-02-18 09:47

【摘要】：由于先天的缺陷，，在大多数的情况下聋哑人只能被动的接受信息，无法表达自身主观的愿望。设计一种聋哑人语音表达系统将有助于他们更好的融入到社会生活中。本文综述了国内外聋哑人语音交互技术发展的现状，针对现有的聋哑人辅助发音系统普遍存在实现成本高、使用不方便的缺点，提出设计一种低成本、高可靠性、操作简便的便携式聋哑人语音表达系统。文中详细的介绍聋哑人语音表达系统实现的两种方案，并对这两种方案的可行性进行了分析。基于16位的凌阳单片机SPCE061A的实现方案中，综合考虑成本、功耗、性能的情况下，提出在一个特制的手套上分布有按键输入电路，使用者通过按压手套上不同的部位实现系统的输入，6763个常用汉字和120句日常用语的发音文件经过压缩处理后存放在一块SPR4096里。控制器依据手部的按压动作获取按键的操作码后，程序自动匹配输入从语音库中找到对应的的音频文件拼接合成语音然后播放出来。基于ARM的设计方案中，考虑到操作简易、便于移植使用和提高输出语音的质量的情况下，提出使用触摸屏或三维体感控制器作为系统的输入设备，以触摸屏作为系统的显示设备，使用相对成本较低的ARM内核的STM32F103微处理器作为系统的控制器，控制器会依据触摸屏上输入的指令从字库中找到与之对应汉字进行显示。同时SD上存储的与输入相对应的音频文件将通过SPI接口输入VS1053音频解码芯片进行解码，拼接合成输出语音。在详细的介绍了两套聋哑人语音表达系统样机的硬件和软件设计后，分别在这两套系统上进行了实验研究。两套聋哑人语音表达系统均实现了手动输入句子输出语音和播放日常用语的功能。实验效果表明两套聋哑人语音表达系统输出语音的自然度和清晰度都是比较好的。该系统在一定的程度上解决聋哑人与正常人沟通不便的问题，同时为后人进行相关方面的研究提供一定的借鉴，达到了预期设计的要求。
[Abstract]:Due to congenital defects, the deaf and mute can only passively receive information and can not express their subjective wishes. The design of a speech expression system for deaf people will help them to better integrate into social life. This paper summarizes the present situation of the development of speech interaction technology for the deaf and mute at home and abroad, aiming at the disadvantages of high cost and inconvenient use of the existing auxiliary speech system for the deaf and mute, a kind of low cost and high reliability design is put forward. A portable speech expression system for deaf and mute people. In this paper, two schemes of speech expression system for deaf and mute people are introduced in detail, and the feasibility of these two schemes is analyzed. In the implementation scheme of SPCE061A based on 16-bit Sunpositive MCU, a key input circuit is proposed to distribute on a special glove, considering the cost, power consumption and performance. The user realizes the input of the system by pressing different parts of the gloves. The pronunciation files of 6763 common Chinese characters and 120-sentence words are compressed and stored in a SPR4096. After the controller acquires the operation code of the key according to the pressing action of the hand, the program automatically matches the input and finds the corresponding audio file from the speech database to splice the synthetic speech and play it out. In the design scheme based on ARM, considering that the operation is simple, easy to transplant and to improve the quality of the output voice, a touch screen or a three-dimensional body sensation controller is proposed as the input device of the system. The touch screen is used as the display device of the system, and the STM32F103 microprocessor with relatively low cost ARM core is used as the controller of the system. The controller will find the corresponding Chinese characters from the font according to the instructions input on the touch screen for display. At the same time, the audio files stored on the SD corresponding to the input will be decoded by the VS1053 audio decoding chip input through the SPI interface, and the output voice will be spliced together. After introducing the hardware and software design of two sets of speech expression system for deaf and mute in detail, the experiments were carried out on the two systems. Both deaf and mute speech expression systems have realized the function of manual input sentence output speech and play daily language. The experimental results show that the speech naturalness and clarity of the two speech expression systems are good. To a certain extent, the system solves the problem of communication inconvenience between deaf and normal people, and provides some reference for future generations in related research, and meets the requirements of the expected design.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN912.3

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