DAC与Jitter

gzXW

原帖由 zifzhu 于 2007-2-6 17:06 发表
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独立时钟不同于spdif信号的时钟。jitter就产生了。就是这种jitter最难对付。

! o, p% w* ^( Z7 o& Z7 H解决方法你自己在楼上已经说了，商品化的DAC也有，记得TEAC就有一款。

gzXW

找到了，TEAC Esoteric P-70 CD Transport and D-70 D/A Converter

$ z& K" A% |" A" P. D; [) H* LP-70 and D-70 combination ($7500 and $6500 respectively)，米物。
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2. The P-70 can achieve word synchronization by accepting a master clock from any suitably-equipped D/A converter. With the converter acting as the master clock, any jitter resulting from data transfer between the player and the converter is essentially eliminated.
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2. TEAC also includes 128Mbits of RAM Link buffer (Refined Asynchronous Memory Link) to eliminate jitter, allow high bit-rate and high frequency sampling and make it unnecessary to continuously adjust the clock frequency. “The DAC is locked to a direct crystal-controlled fixed-frequency clock.” On the left and right channels there are three kinds of analog filters that are chosen automatically depending on the sampling frequency. Finally, the D-70 uses four multi-bit DAC Burr Brown PCM1704 units.
   

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zifzhu

原帖由 gzXW 于 2007-2-6 18:47 发表
0 F. a, Z1 M: X, A' b7 l找到了，TEAC Esoteric P-70 CD Transport and D-70 D/A Converter
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P-70 and D-70 combination ($7500 and $6500 respectively)，米物。


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The P-70 can achieve word synchronization by accepting  ...

, B, U- y- C$ L' }6 w. H, o9 r不想上CD啊。就在PC上玩玩。