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In Reply to: I don't know what Stereophile is doing with their measurement scheme posted by Sordidman on September 21, 2006 at 10:00:48:
<< whether or not they are measuring the entire player or just the transport. >>Stereophile is using the Miller Audio Research test suite. The jitter test methodology was initially proposed by Julian Dunn. This method tests the entire player.
Not only is there no practical way of testing the transport mechanism (drive) by itself, there is absolutely no reason to do so. All digital players have a FIFO buffer that essentially eliminates any measureable jitter from the transport mechanism itself.
<< which would render most of this entire thread: useless... >>
Exactly so. As I have pointed out several times in this thread, the transport mechanism itself (drive mechanism) has almost no effect on measured jitter whatsoever. This is exactly why Stereophile found the jitter on the Teac X-01 using the massive VRDS-Neo mechanism to be two to three times higher than the jitter on almost any other multi-format player.
Racerman also correctly points out that we still don't have a good understanding of the correlation (or lack thereof) between jitter measurements and sound quality.
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Follow Ups
- Exactly - Charles Hansen 10:46:18 09/21/06 (2)
- Well yes and no...... - Alex Peychev 11:23:05 09/21/06 (1)
- Re: Well yes and no...... - Charles Hansen 12:08:06 09/21/06 (0)
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