From this simple lowpass filter, the signal goes to the active tone control stage.
从这个简单的低通滤波器，信号到积极的基调控制阶段。
This means that the chosen tone will be ringing when the proper profile is active.
这意味着将振铃音选择了正确的配置文件时被激活。
This means that the chosen tone will be ringing when the proper profile is active.
这意味着将振铃音选择了正确的配置文件时被激活。
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