User Manual

MTX5-D/MY4-AEC 系统设置说明书 24
 MY4-AEC 中的信号处理
MY4-AEC 回声消除器 （AEC）通过对比从远端接收到的参考信号和来自麦克风的信号来确定信号的哪些成分是
回声，然后从麦克风信号中只消除远端的回声成分。然后将无回声的近端声音清晰地传送到远端。信号流如下。
有两个 NR （降噪）位置：From Far-end 和 To Far-end。各位置作用如下。
From Far-end
从远程位置的投影仪或空调等噪音源中减小稳定状态噪音。
To Far-end
从本地投影仪或空调等噪音源中减小稳定状态噪音。
附录
From Far-end AFar-end Voice A
NR
REFERENCE ON/OFF
From Far-end BFar-end Voice B
NR
From Far-end CFar-end Voice C
NR
From Far-end DFar-end Voice D
NR
To Far-end 4
Near-end Mic. 4
Near-end Voice 4
To Far-end 3
Near-end Mic. 3
Near-end Voice 3
To Far-end 2
Near-end Mic. 2
Near-end Voice 2
To Far-end 1
Near-end Mic. 1
Near-end Voice 1
NR
FBS
AEC
NR
FBS
AEC
NR
FBS
AEC
NR
FBS
AEC
NR
FBS
: 参考信号
: Feedback suppressor （反馈抑制器）
: Noise reduction （降噪）
C.S.G., PA Development Division
© 2013 Yamaha Corporation
312YC-A0