在机械手臂的控制下，麦克风和喇叭形成了一个回授场。两个机械形成一个对话状态，尝试着接触，但在接近时产生声音又马上分开。在这个声音的回路中互相观察，试探，接触又分离。

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Under the control of the robotic arm, the microphone and speaker form a feedback field. The two machines form a dialogue state, trying to contact, but when they approach, they make a sound and separate immediately. In this sound circuit, observe each other, test, touch and separate.