double-talk detector双端检测器
This is a double-talk这是自相矛盾的话
double-talk acoustic echo canceling双端会话声回声抵消
N-UNCOUNT（不可数名词） If you refer to something someone says as double-talk, you mean that it can deceive people or is difficult to understand because it has two possible meanings. 模棱两可的言谈