Audio signal transmission method, smart television, power amplifier and smart television system

The invention discloses an audio signal transmission method, a smart television, a power amplifier and a smart television system. The method is applied to the smart television configured with a wireless transmitter at a first HDMI interface, and the method comprises the steps that the wireless transmitter receives an audio signal output by the smart television and packages the audio signal; and the packaged audio signal is transmitted in a wireless mode so as to transmit the audio signal to a power amplifier. According to the invention, the wireless transmitter is arranged on the HDMI interface of the smart television, and the audio signal transmitted to the HDMI interface by the smart television is sent to the power amplifier in a wireless manner through the wireless transmitter, so thatthe smart television does not need to be connected with the power amplifier through an HDMI line, the ARC/EARC function of the smart television can be realized in a wireless manner, and convenience isbrought to the user. 本发明公