本项目实现了基于声波的通讯系统，可以在两台设备之间传递任意长度 ASCII 字符串。
sender.py：发送端代码，输入待发送的 ASCII 字符，输出名为output.wav的文件。receiver.py：接收端代码，运行代码开始监听，在录制时间结束后自动停止，在命令行中输出解码的二进制结果与 ASCII 字符结果，并将解码的 ASCII 字符通过可视化弹窗进行弹出。preamble.wav：是receiver.py的依赖文件，保存了 preamble 的波形数据，便于相关性计算。output.wav文件生成后，程序执行结束；receiver.py代码进行监听；output.wav；
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