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why  can i  not keep getting converted digits around a number while a constant voltage was input to microphone continuously

Question asked by bob1985 on Aug 28, 2012
Latest reply on Aug 28, 2012 by AndyR

     i made a test, when the Mic of my Android Phone was input a constant 2.2v continuously , the converted digits in the phone jumped to a big number 32767 then fail to numbers around zero immediately,even the voltage was still input. i thought that the digit around a value will be kept getting while a constant voltage was input to microphone continuously ,

2012-08-28_112246.jpg

can anyone explain this ?... appreciated!

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