A multi-format output conversion device based on eARC audio signals is disclosed, relating to the field of
audio signal conversion, and particularly to a multi-format output conversion device based on eARC audio signals. To achieve the above objective, this utility model adopts the following technical solution: it includes a housing, an
HDMI connector, a circuit board, and an output connector. The circuit board is disposed within the housing, with an
HDMI connector and an output connector respectively located at both ends of the housing. The output connector is either an SPDIF output connector or an RCA interface connector. The circuit board includes a main
control unit, an eARC
receiver chip, an audio
receiver shaping logic
chip, an SPDIF output interface, and a
power module. The eARC
receiver chip connects to a television device via the
HDMI interface. The television communicates and controls with the main
control unit through the eARC receiver chip. The output of the eARC receiver chip is connected to the audio receiver shaping logic chip, and the output of the audio receiver shaping logic chip is connected to the SPDIF output interface. The
power module supplies power to each chip unit. It can convert audio signals input via HDMI eARC into SPDIF
optical fiber signals or analog RCA signals for output according to different needs; it is compatible with both SPDIF and RCA traditional audio interfaces.