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有两路模拟音频信号，怎么将它们合成一路音频信号（送往耳机）呢？有没有可以使用的芯片
Hi shiru,
一个简单的方法就是使用加法器做Mixer，即混音电路，用运放搭就可以，下面一个反相加法混音电路供你参考：
Thanks.
谢谢您的回复，我实验一下
