My electrical engineering professor told us this about CD data retrieval. Music CD's came first. There were errors in reading the data, but they were small enough that our ears did not detect the difference. :-) For the data CD's to become useful, error correction algorithms were developed. Your data cannot have any errors in it, especially when you are dealing with data like your bank statement. The data you get off the CD must match perfectly or data is of no use. Most of the differences between CD players are going to be how jitter is handled and how the analog output is done. My professor was one of the researchers who developed the blue laser technology. The pits that mark the data on the surface of the CD are smaller with the blue laser, resulting in greater storage.
Article explaining how CD players work
My basic understanding is that there are three elements to how CD players work:
1. The transport "reads" the digital information, extracting it from the CD
2. The DAC translates the digital information into analog form
3. The analog circuitry turns the analog signal into a line-level output
Can someone recommend an article that explains this in more detail? What I am most interested in is understanding the various design issues that account for why one CD player can be so much more expensive than another.
1. The transport "reads" the digital information, extracting it from the CD
2. The DAC translates the digital information into analog form
3. The analog circuitry turns the analog signal into a line-level output
Can someone recommend an article that explains this in more detail? What I am most interested in is understanding the various design issues that account for why one CD player can be so much more expensive than another.
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- 7 posts total
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Here's one of the best articles I've come across: TNT Audio DIGITabilis: crash course on digital audio interfaces |
- 7 posts total