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發表於 2011-7-20 17:33:03
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本帖最後由 raywan 於 2011-7-21 13:19 編輯
分享線材的傳輸及設計基本知識
The electrical functions of interconnects and speaker cables are commonly misunderstood, as most people believe that most of the signal energy is transferred as electron flow within the conductors. That misunderstanding lead to the assumption that using thicker conductors would improve sound quality, which is generally incorrect. Since most of the energy in audio signals is actually transferred in the electromagnetic field surrounding the conductors. Thicker conductors can only reduce the signal energy that is lost as heat (resistive loss), while they actually increase the electromagnetic (inductive) loss that causes most of the degradation that we actually hear from cables.
Resistive loss is also less audible because it affects all frequencies equally, while electromagnetic (inductive) loss is very uneven, so it actually changes the shape of the musical waveforms.
Not only is the overall inductive loss of a cable problematic, it is also somewhat complex, as it is made up of skin effect, proximity effect, eddy current resistance and various mechanical modulation effects caused by structural instability.
For good Hi-End cables, the following needs to be considered:
To minimize skin effect, proximity effect, eddy current resistance
To provide very low resistance
To channel the electromagnetic field energy as efficiently as possible
To fine tune the spacing between the positive and negative conductors
To reduce the electromagnetic interference from internal and external
To reduce vibrations or resonance
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The ideal designs of the cables are preferably to provide comprehensive solutions to these effects based on their audibility and the goal to achieve a pure direct connect.
The goal of preserving the natural timbre, spatiality and effortless dynamics of the original live music or recorded audio signals.
After all, the importance is, in fact, the cable overall design --> conductor, construction, insulation, termination, shielding, .......
Would any other audiophiles and cable experts correct me if I were wrong.
嘗試用 Google Translation 翻譯
人們通常誤解音頻接線及喇叭接線的傳電功能，因為大多數人認為，大部分信號能量傳輸是以電子在導體流動。這種誤解導致假設使用較粗大的導線會提高聲音的質量，這基本是不正確的。因為大多數的能量在傳輸音頻信號時，實際上是導體周圍的電磁場進行傳送。較大的導線只能降低信號作為熱能量的丟失（電阻性虧損），而他們實際上增加了電磁（電感性）的損失，導致大多數由接線引至我們聽到的實際音頻劣化。
電阻性虧損對音質影響相對為少，因為它會相同地影響整個可聽音頻段(例如一般 20Hz~20kHz)。而電磁（電感性）的損失是很不平均的分佈，因此它實際上改變了音樂的波形。
不僅只是整體接線電感性的損失問題，還有更複雜的相應問題產生，因為有其他因素如表面傳輸效果，鄰近效應，渦流阻力和各種機械調製效應引起的結構不穩定。
故此為了設計及生產良好的高級音頻接線，下面各點均需要考慮及克服：
盡量減少表面傳輸效果，鄰近效應，渦流阻力
提供非常低的導體電阻
盡高效能傳輸電磁場能量
微調導體正負極的間距
減少來自內部和外部的電磁干擾
減少振動或共振
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理想的音頻接線設計最好是針對所有劣化問題，提供全面的解決方案，減少音頻接線對可聽音頻段的影響為目標，也是實現純正直接連接(即完全無味精且還原力強的接線)為理想。
最終目標是保持自然的音色，空間感和活潑的動態，還原現場音樂或錄製的音頻信號。
畢竟，事實上最重要就是音頻接線的整體設計 --> 導體，結構，絕緣，終端接駁，屏蔽，......
如果我有任何錯漏，敬請原諒，並希各高手、發燒友及音頻接線專家糾正我的錯處
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樓主: raywan
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發表於 2011-7-20 17:42:37
