Audio cables are used to transmit audio signals between different devices. Here are some common uses:

1. Connecting Audio Equipment: They connect components like speakers, amplifiers, and mixers in sound systems, allowing them to work together.

2. Transferring Sound to Speakers: Audio cables carry signals from a source (like a computer, CD player, or audio interface) to speakers or headphones.

3. Recording Audio: In professional settings, XLR cables are used to connect microphones to recording equipment, ensuring high-quality audio capture.

4. Home Theater Systems: HDMI and optical cables connect televisions, soundbars, and receivers, delivering both video and audio signals for an immersive experience.

5. Instruments: TRS or instrument cables connect electric guitars, keyboards, and other instruments to amplifiers or effects processors.

Overall, audio cables are essential for transmitting sound in various contexts, from casual listening to professional audio production.