訊源的處理選擇 - 喇叭音響

By Zenobia
at 2010-01-14T22:45
at 2010-01-14T22:45
Table of Contents
: 推 yujie0822:數位訊號只有0跟1,有差嗎? 01/14 22:02
: → f9999:Pulse 也是有rise/ fall time 也是有Skew吧? 01/14 22:05
: 推 kmorgue:阻抗大有差嗎? 就算有IRdrop,digital setup/holdtime有過 01/14 22:30
: → kmorgue:protocol 還是會對啊! digital 世界不是這樣嗎?! 01/14 22:31
數位訊號只能說是類比的簡化 在現實生活仍然是類比訊號
也因此才會存在setup/hold time等問題
也不能保證在任何條件(壓力溫度等)下都不會出錯
也因此會有 CRC 跟 ECC 來檢查與修正
也就是說 在足夠的ECC與檢查機制下 數位訊號是可以視為理想的無失真
--
: → f9999:Pulse 也是有rise/ fall time 也是有Skew吧? 01/14 22:05
: 推 kmorgue:阻抗大有差嗎? 就算有IRdrop,digital setup/holdtime有過 01/14 22:30
: → kmorgue:protocol 還是會對啊! digital 世界不是這樣嗎?! 01/14 22:31
數位訊號只能說是類比的簡化 在現實生活仍然是類比訊號
也因此才會存在setup/hold time等問題
也不能保證在任何條件(壓力溫度等)下都不會出錯
也因此會有 CRC 跟 ECC 來檢查與修正
也就是說 在足夠的ECC與檢查機制下 數位訊號是可以視為理想的無失真
--
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喇叭音響
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