An audio processing chip includes a detector circuit, a first-in first-out (FIFO) circuit, and an adjustment circuitry. The detector circuit is configured to detect an audio stream to output an enable signal. The FIFO circuit is configured to start outputting audio data corresponding to a channel in the audio stream to be a first signal. The adjustment circuitry is configured to process the first signal, in order to generate an output signal and transmit the output signal to a speaker.