Method and apparatus for audio testing

An audio testing apparatus, comprising:

• an audio processing unit, having a first output terminal, a second output terminal, a first input terminal and a second input terminal;
• an electronic device, coupled to the audio processing unit, and having a first audio receiving device, a second audio receiving device, a first audio sending device and a second audio sending device, wherein the first audio receiving device is electrically connected to the first audio sending device through a first loop, and the second audio receiving device is electrically connected to the second audio sending device through a second loop,
• wherein the audio processing unit respectively sends a first audio testing signal and a second audio testing signal to the first audio receiving device and the second audio receiving device of the electronic device through the first output terminal and the second output terminal, wherein the first audio testing signal and the second audio testing signal respectively have a specific frequency, the audio processing unit respectively receives a first response signal and a second response signal from the first audio sending device and the second audio sending device of the electronic device through the first input terminal and the second input terminal, wherein the first response signal and the second response signal are generated in response to the first audio testing signal and the second audio testing signal respectively passing through the first loop and the second loop;
• and
• a testing unit, coupled to the electronic device and the audio processing unit, and respectively analyzing the first response signal and the second response signal received by the audio processing unit to test functions of the first audio receiving device, the second audio receiving device, the first audio sending device and the second audio sending device,
• wherein the testing unit respectively calculates a first difference value and a second difference value by respectively subtracting an environment reference signal from the first response signal and the second response signal, when the first difference value and the second difference value are greater than a threshold, it represents that the functions of the first audio receiving device, the second audio receiving devices, the first audio sending device and the second audio sending device are normal, and when the first difference value and the second difference value are smaller than the threshold, the audio processing unit respectively changes the specific frequency of the first audio testing signal and the second audio testing signal.