Eight-to-Fourteen Modulation
Ok kiddo, so you know how there are different kinds of sounds? Like a high-pitched sound or a low-pitched sound? Well, eight-to-fourteen modulation has to do with making sound signals on a disc or a CD.
When you listen to music, the songs are stored on a CD with tiny bumps that represent the sound waves of the music. Eight-to-fourteen modulation is a special way of organizing those bumps on the CD so that the CD can store more music.
Here's how it works: the bumps on the CD are read by a light that bounces off the CD and gets turned into an electrical signal. That signal gets turned into the music that you hear. But, if you just made the bumps higher or lower to store more music, the light wouldn't be able to read them properly.
So instead, eight-to-fourteen modulation uses a combination of bumps that are either 0.3 or 0.4 micrometers tall. The bumps are lined up in groups of eight, and each group represents a different pattern of 0.3 and 0.4 bumps. These groups can then represent 256 different patterns of bumps, which can be used to store more music.
But wait, there's more! Sometimes the bumps on the CD can get messed up, like if the CD gets scratched or dirty. Eight-to-fourteen modulation also includes a special technique that can detect when bumps have been messed up and still play the music correctly.
So, in a nutshell, eight-to-fourteen modulation is a way of organizing the bumps on a CD so that it can store more music and still play it correctly if the CD gets messed up. Cool, huh?
When you listen to music, the songs are stored on a CD with tiny bumps that represent the sound waves of the music. Eight-to-fourteen modulation is a special way of organizing those bumps on the CD so that the CD can store more music.
Here's how it works: the bumps on the CD are read by a light that bounces off the CD and gets turned into an electrical signal. That signal gets turned into the music that you hear. But, if you just made the bumps higher or lower to store more music, the light wouldn't be able to read them properly.
So instead, eight-to-fourteen modulation uses a combination of bumps that are either 0.3 or 0.4 micrometers tall. The bumps are lined up in groups of eight, and each group represents a different pattern of 0.3 and 0.4 bumps. These groups can then represent 256 different patterns of bumps, which can be used to store more music.
But wait, there's more! Sometimes the bumps on the CD can get messed up, like if the CD gets scratched or dirty. Eight-to-fourteen modulation also includes a special technique that can detect when bumps have been messed up and still play the music correctly.
So, in a nutshell, eight-to-fourteen modulation is a way of organizing the bumps on a CD so that it can store more music and still play it correctly if the CD gets messed up. Cool, huh?