Audio signal transmission device and method, audio signal reception device and method, and audio system

An audio signal transmission method comprising:

• 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 the digital signal so as to output at least one serialized digital signal by a serializer element;
• and
• converting the at least one serialized digital signal into at least one optical signal by an optical interface transmission device.

A speaker system comprising:

• an audio signal transmission device, at least one optical fiber device, and at least one audio signal reception device, wherein,
• the audio signal transmission device comprises:
• a low-noise buffer element configured to receive an audio signal and generate a low-noise buffer signal;
• an analog-to-digital conversion element configured to convert the low-noise buffer signal into a digital signal;
• a serializer element configured to serialize the digital signal so as to output at least one serialized digital signal;
• and an optical interface transmission device configured to convert the at least one serialized digital signal into at least one optical signal and transmit the at least one optical signal to the at least one optical fiber device;
• the at least one audio signal reception device comprises:
• an optical interface reception device configured to receive from the at least one fiber optical device and convert one of the at least one optical signal so as to output an electrical signal;
• and a deserializer element configured to deserialize the electrical signal and output a deserialized digital signal.