Why convert audio to digital?
We like to convert audio signals to a digital signal. First, as a digital signal, it can be moved around many times without degrading during transmission. Old vinyl records would eventually wear out and get scratched. Tapes would wear out and the signal would be degraded. Not so with an audio track that is digitized. The data string is easier to "protect" than the vulnerable records or tapes. It's not going to degrade or "wear out" from playing. Also, digital audio can be stored as a digital file in contemporary computer- or microprocessor-based storage systems. This kind of storage can suggest that it can be kept around indefinitely. Certainly since it's a digital data string, it can be stored a "long time" without fear of degradation of the media, like with records or tape. Another advantage of converting audio to a digital signal (and a biggie) is that as a digital signal, it can be processed to achieve almost limitless effects. The clever designs of digital signal processing software make these applications powerful manipulators of any audio that is pushed through them in the form of a data string. The end product is constrained by almost nothing but the creativity (and the skill at using the software) of the person sitting at the keyboard of the computer. Got links if you want them. They are to related articles posted by our friends at Wikipedia, where knowledge is free.