| 摘要 |
An audio device adapter includes first and second conversion circuits, a switch unit, and an audio interface. The first conversion circuit includes a digital to analog (D/A) converter and a coupler. The second conversion circuit includes an analog to digital (A/D) converter and a decoupler. When the switch unit connects the first conversion circuit to the audio interface, the D/A converter converts a digital signals representing audio data into a first analog form data for coupling with a first alternating current (AC) voltage. When the switch unit connects the second conversion circuit to the audio interface, the decoupler decouples and separates a second analog form data into the second analog form data. The A/D converter converts the second analog form data into digital signals representing audio data, and outputs the digital signals representing audio data to the audio interface.
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