How to connect external audio using an optical cable

An optical cable is a physical connection that transfers audio digital signals by light. Looking at the transmission process, light passes through the optical cable, and the light pulse is converted into electrical pulses containing audio information. The electrical pulse is then converted to an analog signal through a compatible destination device and amplified so that we can hear it.

The advantages of the optical cable are that the transmission loss is lower than metal cables, which is good for long-distance transmission and it can be used semi-permanently.

Both an optical cable and HDMI are connection methods that provide good sound for you. However, you may be curious about the differences between them.

First and foremost, there is no difference in sound. Whichever type you choose, they both send the same sound. Both can send multi-channel audio that is better than analog.

The main difference between an optical cable and HDMI is the number of audio formats supported. The optical cable supports 5.1 Dolby Digital and DTS audio. HDMI supports not only 5.1 Dolby Digital and DTS audio but also Dolby Digital Plus, Dolby True HD, DTS-HD Master Audio, Dolby Atmos, and DTS:X.