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In Reply to: Re: My search for the "perfect" USB DAC (audioengr & ThomasPf).... posted by Wavy Davy on November 15, 2004 at 11:52:52:
I’m afraid you’ve lost me on this notion of “pit jitterâ€. The pits on a master could certainly have been written with a jittery clock, but wouldn’t all the pit jitter be removed when the data is extracted? Data on an audio CD is written in 2352 byte sectors. Within each sector, the binary data is encoded and interleaved. Simply put, you always have to read an entire sector into a buffer and then decode it before you can get any meaningful data. Data does not simply stream off a disc. So how can pit jitter get past the decoder?By the way, the same concepts apply to magnetic hard disks. The data rates, sector sizes, and encoding algorithms may be different, but the data is handled in a similar sector-buffered way. However, I wouldn’t put it past an audiophile to make claims about the effects of jittery data written on a hard disk.
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Follow Ups
- Pit jitter - rkw 11/16/0413:04:10 11/16/04 (2)
- Re: Pit jitter - Wavy Davy 08:19:33 11/17/04 (0)
- Re: Pit jitter - ThomasPf 19:11:20 11/16/04 (0)
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