I want to use the headset is connected to the microcontroller for data transmission, but when I turned off the microcontroller can receive the data and why?

microcontroller headphones android

I want to use the headset is connected to the microcontroller for data transmission, but when I turned off the microcontroller can receive the data and why?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
Why is no one answer! Master it? Where?
Reply:
Data on the received data spread slightly
Reply:

reference to the second floor zengchuisheng reply:

data spread on data received slightly

key is I do not want to remove the clutter so that data is received not clutter it?