Four-channel Compact Disc Digital Audio

Okay kiddo, have you ever listened to music on a CD? It's a small, flat disc that has music stored on it.

Now, some CDs can have four different channels of sound that play at the same time. That means you can hear different instruments or sounds coming from different directions.

It's kind of like having a big toy box with four different toys inside. Each toy makes a different sound, and you can play with all of them at the same time.

But instead of toys, it's music instruments and instead of a toy box, it's a CD player!

The four channels on the CD are called left-front, right-front, left-rear, and right-rear. They work together to make the music sound like it's all around you.

It's like being in the middle of a big concert with the band playing in all directions.

That's what we call four-channel compact disc digital audio!