Abstract: An audio signal transmission device, an audio signal transmission method, an audio signal reception device, an audio signal reception method, and an audio system are provided. The audio signal transmission method includes: receiving an audio signal and generating a low-noise buffer signal by a low-noise buffer element; converting the low-noise buffer signal into a digital signal by an analog-to-digital conversion element; serializing a digital signal to output one or more serialized digital signals by a serializer element; and converting the one or more the serialized digital signals into one or more optical signals by an optical interface transmission device. The audio signal reception method includes: receiving and converting one of the at least one optical signal and outputting an electrical signal by the optical interface reception device; and deserializing the electrical signal and outputting the deserialized digital signal by the deserializer element.

Abstract: The disclosure provides an optical transmission system and an optical matrix. The optical transmission system includes a first optical transmitter, an optical matrix, and a first optical receiver. The first optical transmitter receives a first video electrical signal corresponding to a first video standard, and converts the first video electrical signal into a first optical signal at a specified transmission rate. The optical matrix is used to receive and forward the first optical signal. The first optical receiver receives the first optical signal at the specified transmission rate forwarded by the optical matrix, and converts the first optical signal into a second video electrical signal corresponding to a second video standard.