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实现中,使用 qaudiodeviceinfo 获取输入输出设备信息,使用 qaudio
2 in 1 out digital optical audio selector - actively powered
0 audio interface with 1 year everythingmusic extende
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audioout
五毛美图【audioout】包含4 in 1 out av rca switch box av audio video signal switcher,ifb audio box – 6 channel premium audio interface (lu10-ifb-001,application diagram for 1 in 3 out composite s-video audio,audio a/d converter, 3.等图片的集合。