系统通过麦克风将采集到的语音转换为电信号接着此信号进入语音芯片ISD1280 可对语音信号进行前置放大、滤波之后在单片机的控制下语音芯片对数据进行采样存储。回放时单片机控制语音芯片提取数据经过语音芯片对数据进行读取之后即可通过喇叭播放。按键模块可以控制整个系统的工作状态。ISD1820 采用多电平直接模拟量存储技术因此能够真实、自然地再现语音信号。当系统处于录音和放音状态时LCD 液晶屏幕会显示相

The system converts the collected speech into an electrical signal through a microphone, then this signal enters the speech chip. The ISD1280 can perform pre-amplification and filtering on the speech signal, and then under the control of the microcontroller, the speech chip samples and stores the data. During playback, the microcontroller controls the speech chip to extract the data, and after the speech chip reads the data, it can be played through the speaker. The button module can control the entire system's operating state. The ISD1820 uses multi-level direct analog storage technology, so it can reproduce speech signals realistically and naturally. When the system is in recording and playback mode, the LCD screen displays the corresponding information to assist judgment.