| 摘要 |
Provided in the present invention is an audio interface self-adaption device comprising: an audio interface, where the audio interface comprises pin 1 and pin 4, and where one between pin 3 and pin 4 is a microphone pin of the audio interface while the other is a ground pin; also comprising: first and second level comparator modules, a PNP-type triode, a power supply output end, and a switch module, where the switch module connects, on the basis of the highness/lowless of the level of a signal received by a signal input pin (Sel), one between a first input pin (B0L) and a second input pin (B1H) to the output pin of the switch module, where an audio pin is either pin 1 and/or pin 2 of the audio interface, where the first pin is one between pin 3 and pin 4, and where the second pin is the other one between pin 3 and pin 4. The device of the present invention allows for implementation of automatic adaption to audio signal transmission devices of different audio interfaces, and for successful detection via the audio signal transmission devices when detecting the MIC pin of the audio interface. |
