What are the differences between balanced and unbalanced audio transmission?
Audio signals are transmitted in a balanced or an unbalanced manner. Balanced transmission features a more powerful anti-interference capability.
The phase cancellation principle is used in balance transmission. The same audio signal is transmitted through two cables with inverse phases. In case of interference, the two signals are close to each other at the same shield layer and receive the same interference. When the two signals are combined, phase cancellation causes some frequencies to be cut, while others may end up boosted. This transmission manner applies to dedicated scenarios and long-distance transmission.
Only signal cables and ground cables are involved in unbalanced transmission. This transmission manner applies to scenarios that do not have high requirements for antiinterference capability.