Re: [閒聊] 關於 bnc to RCA 轉接頭

[intela60474 (Alber)]

audiophile的官網有不少可供學習的資訊

讓我節錄一段：

http://www.audiophilleo.com/en/definitions.aspx?Direct%20connection

Direct connection

...

The Audiophilleo is designed to produce the lowest jitter, and sound best,
without the use of a cable. If you already have quality S/PDIF cables, try
them out, but the sound may be even better using direct connection. Here’s
why:

With an ordinary USB-S/PDIF interface, the sound may improve with a longer,
or simply a different, cable, because of improved impedance matching and
reflection suppression. Remember that “digital” signals are just
oddly-shaped analogue wave forms; like water waves in a pool, they can reflect
off the sides and create complicated interference patterns. See
http://www.positive-feedback.com/Issue14/spdif.htm for more.

And, as a general rule, any device driving a short cable must have very fast
rise-times or “edges” to avoid jitter created by interfering internal
electrical reflections. The relatively slow, 25 ns transitions typical of
many USB-S/PDIF devices are more compatible with longer cables, which in turn
reduces these reflections and their contribution to clock jitter.

...

結論：除非耳朵收貨，不然一般的DDC還是乖乖上條線吧。

題外話，這種根據理論實作的風格真對我胃口，坐等原PO開團XDD

--
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※ 文章網址: http://www.ptt.cc/bbs/Headphone/M.1413721963.A.175.html
※ 編輯: intela60474 (163.19.96.120), 10/19/2014 20:34:10
推 yamatai: 這我知道啊 但是一條線的音染可能超過得到的好處
→ intela60474: 當然是耳朵收貨覺得好聽最大，其他數據理論僅供參考
推 nodavirius: 我有實作過，DDC是AP2，線是古河FC11，上線弱掉了，更
→ nodavirius: 高級的線我就下不了手再買了XD
→ MitsuhideA: 510 謝謝
→ intela60474: 但音染可以選擇，Jitter有了就是有，可沒得選。
推 nodavirius: 照文章這麼說來，數位線的長度就是關鍵，必須找到最合
→ nodavirius: 適該機器的長度才能有點好效果
推 odanaga: 不能太短嘛QQ
→ greg7575: 我都接 1.5 米