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为什么要对耳机进行性能测试?怎样去设计一款基于AS3415降噪芯片的主动降噪前馈耳机?有哪些步骤?
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如何量测反馈式耳机声学特性?设计反馈式主动降噪耳机有哪些必需的步骤?
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北斗与自动驾驶北斗导航系统怎么样北斗导航的优势及应用现状
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你好,我刚收到41和42包,一直在看精彩的课。现在我想上传第4课的LED闪光灯,但我得到这个错误信息“端口获取失败”。我已经试过堵漏了。这无济于事。在驱动程序安装期间没有错误消息,设备管理器没有报告任何问题。Windows 7的HP。要做什么? 以上来自于百度翻译 以下为原文Hi, I've just received 41 and 42 kits and been watching the nice lessons. Now I wanted to upload the LED blinky from lesson 4 but I get this error message "Port Acquire failed". I've tried plugging out and in back again. This did not help. There were no error messages during driver install and there are no issues reported by the device manager. Windows 7 HP that is. What to do ?
2019-01-15 04:44