| 摘要 |
A device and method for audio signal uplink via an audio interface. In the device, a first pin of the audio interface is connected to an audio uplink signal generating device via a first circuit, and a second pin of the audio interface is connected to the audio uplink signal generating device via a second circuit, where the first circuit and the second circuit are attenuator circuits of each other. This ensures that the first pin and the second pin of the audio interface are both allowed to receive an audio uplink signal transmitted by the audio uplink signal generating device, thus implementing the effect of allowing the audio uplink signal to be transmitted in case the line sequence of the first pin and second pin of the audio interface is unknown. |
