| 摘要 |
An audio player includes a reading unit, a processing unit, a speaker, and a protection unit. The reading unit acquires an audio file stored in a memory. The processing unit processes the acquired audio file to generate an audio signal. The speaker reproduces the audio signal. The protection unit is connected between the processing unit and the speaker and is used for detecting temperature changes of the speaker. An internal resistance of the protection unit is automatically adjusted according to temperature changes of the speaker to adjust the current of the audio signal flowing from the processing unit to the speaker.
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