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redheart83 发表于 2011-4-27 00:48 ![]()
, |( B5 Z( t7 M& ~, e! J$ {" ?数字卡不是只负责传送数字信号么,那不是集成的声卡也能完成,非集成的比集成的好处在哪里
) U- A' H# g) Y* M: a q# F原因很简单:
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4 X! V& G5 [7 X! D6 UBecause the receiver cannot control the data rate, it instead has to avoid bit slip by synchronising its conversion with the source clock. This means that S/PDIF cannot fully decouple the final signal from influence by the analogue characteristics of the source or the interconnect, even though the digital audio data can normally be transmitted without loss. The source clock may carry inherent jitter or wander, and noise or distortion introduced in the data cable may further influence the process of clock recovery. If the DAC does not have a stable clock reference then noise will be introduced into the resulting analogue signal. However, receivers can implement various strategies which limit this influence.
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