语音存储与回放系统

System of A Speech Sounds Saving and Resuming

提出了一种以８０３１单片机为核心的语音存储与回放系统，介绍了系统的组成及软、硬件设计方法。该系统结构紧凑，具有灵活的录音、放音功能；语音音量自动控制功能。采用体选ＲＡＭ的方法，扩大了存储空间，使语音存储时间可以达到十几秒。结果表明，在音频信号频率为３００Ｈｚ至３４００Ｈｚ范围内，系统噪声小，语音回放效果良好。

A speech sounds saving and resuming system which uses 8031 single-chip computer is presented in this pa per. The compose and soft-hard ware design method of the sys tem are described. The system has a reasonable structure, flexi ble function of recording and playing, and control function of volume. The system uses the method of chip-chosen RAM. ex tends the saving space, and more than ten seconds of saving space for speech sounds are realized. The result shows that the system has a good effect of speech sound resuming and the noise is low, when the audio frequency range is from 300Hz to 3 400Hz.