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Dolby Surround(杜比環繞)

本範例是用來說明VCD與SVCD格式也能做出杜比環繞效果.我們先擷取一段有Dolby Digital 5.1 (AC3)音效的影片,然後做出有杜比環繞效果的VCD與SVCD.這個範例是由THX展示片段中做出來的r.

  1. Dolby Surround(杜比環繞)
  2. Dolby Pro Logic(杜比專業定向邏輯)
  3. Dolby Digital杜比數位(AC3)
  4. 使用DVD2AVI轉錄DVD的AC3音軌
  5. 製作VCD與SVCD
  6. 使用Dolby Pro Logic家庭劇院組來測試
  7. 示範影片

1. Dolby Surround(杜比環繞)

Figure from Dolby Surround Mixing ManualDolby Surround(杜比環繞)是一種矩陣演算過程,它能讓任何的立體聲(2聲道)傳輸媒體(不論是類比式或數位式)搭載4聲道音效.而編碼後的聲音能在任何單音或立體聲的裝置上播放.這四個聲道是L, R, C, S (左,右,中央,環繞)詳細位置如圖1.



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