What's the difference between coaxial audio and ordinary audio cable!

1, different interface specifications

Ordinary audio cable is an analog audio interface, and the standard connector of coaxial cable is BNC connector.

2. The types of signals transmitted are different.

Ordinary audio cables transmit analog audio signals, while coaxial cables provide digital audio signals.

3, the use environment is different

Ordinary audio is suitable for short distance, low bandwidth and low power equipment, and coaxial is suitable for long distance, high bandwidth and high power equipment.

4. The output effect is different.

Ordinary audio cable signal effect is average, coaxial cable can obtain powerful and high-quality audio, and restore the original sound effect of movies.

Extended data:

Audio wired connection

Audio lines are more complicated than video lines. In addition to the above three considerations, there is also a problem of balanced and unbalanced connection.

1, balanced connection

The so-called balanced connection is a connection mode that uses two signal lines to transmit a pair of balanced signals. Because the interference of the two signal lines is the same in magnitude and opposite in phase, the interference will be cancelled in the end.

Because of the low frequency range of audio, it is easy to be disturbed in the case of long-distance transmission. Therefore, as an anti-interference connection method, balanced connection is the most common in the audio connection of professional equipment. Dual-core shielded wires are also used as audio connection wires in household appliances, but they transmit left and right channels, which are two signals, and are not balanced connections.

2. Unbalanced connection

Unbalanced connection is a connection mode that only uses one signal line to transmit signals. Because this connection is easy to be disturbed, it is generally only used for household appliances or some occasions with low requirements.

In some cases, it may be encountered that the device interface at one end is a balanced interface and the device interface at the other end is an unbalanced interface. If the requirements are not strict, the balanced end should be connected by balance, and the unbalanced end should be connected by imbalance. Pay attention to the correspondence of each foot. In the case of strict requirements, it is necessary to use conversion circuits to change balance into imbalance or imbalance into balance.

Baidu encyclopedia-audio line

Baidu encyclopedia-coaxial cable