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发表于 2005-3-20 18:16:22
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这里有个以以上原理处理数据jitter的机型,
Meridian 588 cd player, http://www.meridian-audio.com/p_588.htm
新机市场价$3650,可是它的转盘仅仅是个rom drive而已。
其网站上是这样论述数据比特的正确性,和jitter减小的方法,
How can a ROM drive be so good?
ROM drives recover the data from computer discs perfectly. Loading a computer program rarely fails due to the ROM drive. Therefore, extracting the data from a CD can be done without error. In fact, 588 will often read the data from the disc more than once just to be sure it has it right.
Normally, however, a computer pays no attention to how smoothly the data flows from the disc. For high quality audio the final audio must flow very smoothly – without jitter. That’s where our special technology comes in. From leaving the drive, the information is in the hands of very sophisticated digital audio circuitry to give both the highest data integrity and the lowest jitter.
Sound Quality
588 maximises sound quality by reducing jitter to very low levels. Unlike other players that try to lower jitter by controlling drive vibration, the 588’s triple buffer memory architecture abolishes this problem forever.
In 588 the audio is controlled using a precise master oscillator located within the final output section. The result of this sophisticated effort is a clear, open, authoritative sound.
The digital output is precision re-clocked.
The stereo analogue output uses 192kHz 24-bit advanced DACs combined with a superb direct-coupled audiophile-standard output amplifier.
用这样的机器play刻录蝶是不会有jitter的。 |
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