语音识别的智能门控系统设计

该智能门卫系统采用语音识别技术，在陵阳单片机SPCE061A 上实现。硬件部分主要
由SPCE061A 单片机、电源与门控电路、外扩存储器SPR4096、音频输入与输出电路等组成。主要技术是该单片机在语音识别中的应用和对门控电路的设计。该系统软件部分由语音训练模块、语音识别模块、语音数据处理模块、语音播报模块和密码输入与确认模块组成，通过对系统的初始化和识别训练实现了语音数据的采集、特征提取、特定语音识别和语音播放等功能。根据语音识别算法原理，对语音信号的预处理、特征提取、模式匹配做了分析。该系统实验结果表明，系统性能稳定，识别效果好，可用于家庭或小型办公场所的门锁控制。
关键词: 语音识别、门控系统、线性预测、特征提取、模式匹配
Abstract：The intelligent guard system adopts the technology of the voice identification which based on the SPCE061A single chip. The system hardware is made up of SPCE061A single chip, the power and gating circuit, the extended memorizer SPR4096, the voice input and output circuit. The key technologies are the application of the SPCE061A single chip on voice recognition and the design of the door control circuit. The system software is made up of the voice training module, the voice identification module, the voice data processing module, the voice playing module and the code of input and output module. The system completes the functions of collecting the voice data, distilling character, special voice identification and voice playing in terms of initializing the system and the identification training. According to the voice identification arithmetic theory, the pretreatment of voice signal, the character distilling and pattern matching is analyzed. The results of the experiments indicate that the system capability is steady and the identification is effective. The system can be applied in house or small office safety protection.
Key Words：Voice identification, lock control, linear prediction, character distil, pattern
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