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RE: CD ripping to flac add "jitter"

Posted by Paul Wilson (R) on June 2, 2016 at 03:58:48

In Reply to: CD ripping to flac add "jitter" posted by kenzo on June 1, 2016 at 23:59:39:

Virtually all programs used to copy a physical CD to a hard drive use some form of Error Correction Codes, or ECC. While technically "bit perfect," that is, ECC adds a bit when it senses a music bit has been lost, and the number of bits in the copy equal that of the CD, what is added are not necessarily an identical copy of the lost music bit. Additionally, ECC does not necessarily place the music bits in their natural order, or there may be gaps in-between the bits. The result is timing errors in the playback of the digital file. Timing errors = jitter. Sometimes very high levels of jitter. The effect this can have on sonics can be dramatic, even profound. And this is all before the file ever reaches the DAC and has no influence on the sample rate and word length. For a little better understanding of the physics behind digital audio, I highly recommend reading the review listed below. While it is a review for a music server, and its a few years old, the science behind what happens when CD's are copied to a hard drive is unassailable.

http://www.positive-feedback.com/Issue65/memoryplayer.htm

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