PCDVD數位科技討論區 - 又有新玩意兒~ DAE Quality 測試程式！

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又有新玩意兒~ DAE Quality 測試程式！

DAE Quality ...from EAC - Exact Audio Copy！

這是鼎鼎大名的 EAC 出的 DAE Quality 測試，還不太知道到底要怎樣測，不過好像步驟是：

1. 空出 1.8G 的硬碟空間。 :eek:
2. 用 CreateReference.exe 製作「母片 Wave」(Reference.wav)。 :(
3. 把「母片 Wave」(Reference.wav) 燒錄至 CD-R。
4. 污損你的 CD-R。(還不知道為何要這個步驟) :confused:
5. 用他出的 EAC 或任何支援 Burst Mode 的抓音軌程式把音樂抓到同一目錄中 (Wav 格式)
6. 執行「Analyse.exe」，然後等... :(
7. 經過漫長的等待，他會生出「log 檔」、「比對結果圖檔」與「資料檔 (dat)」。 :D

附註：
1. 檔案下載：DAE Quality
2. 原網站有詳細圖文說明，他的圖類似這樣：

　

引用:

DAE Quality is a new project for testing CD and DVD drives for DAE quality. As this test environment is quite cheap, the results are probably not comparable to test CDs that costs around 500$.

If you don't know what error concealment is, or if you have never heard of dB or ECC, this tool is most probably nothing for you. It is mainly for (online) magazines and interested users and professionals that want to know which drive has the best optical system, and how a drive performs on error correction and error concealment. The idea of this program came after reading an online test of some CD-R drives. The DAE test was done using CD Speed and all of the drives had as a result the maximum of 10.0 points. Using a CD-R in best shape to do the DAE test is ridiculous, if my drive would not read audio CDs error free from an error free disc, I would bring the drive back to the vendor. It is far more interesting to see how a drive is behaving under critical conditions (which will also tell something about the DAE quality on CDs that have manipulated C2 error information on purpose). For that a special test CD is created, that can be used to do a comparison between different drives. Of course as there is much manual work and it is also based on the CD-R used, only results done with one specific test CD can be compared with other results of that specific CD.

1.8G的空間實在太大了一點
還有為何要污損燒好的CDR呢:confused:

Re: 又有新玩意兒~ DAE Quality 測試程式！

引用:

Originally posted by adelies
4. 污損你的 CD-R。(還不知道為何要這個步驟) :confused:

好怪的步驟....

好像有點麻煩的感覺= =b

污損 CD-R 是重要的步驟.

一般來說品質正常的 CD-R 以中上水準的讀取機以
EAC 的 burst mode 來讀取音軌,
要讀出一模一樣的音軌並非難事.
因此大部分的讀取機都能測出 100% 的品質.

因此有必要把 CD-R 進行一些適度的污損,
這時就比較容易顯示出不同讀取機間的讀取能力差異.

問題就出在污損的標準要怎麼定? 總要有一個基準吧?

引用:

Originally posted by deepsky
問題就出在污損的標準要怎麼定? 總要有一個基準吧?

污損的標準化本來就很困難.
但這個程式仍足夠讓個人來對不同讀取機進行比較.

對不同讀取機進行測試時,
只要使用同一張污損的 CD-R, 那麼污損的程度就是一致的,
讀取能力測試時就有了比較的基準.

關鍵在於「相同一張污損的 CD-R」.

去五金行,買1000號的砂紙磨花,我用EAC測光碟機抓音軌能力都是這樣測的!
這時你會覺得Plextor賣得貴是有道理的!

用 cd speed 本身的 advanced DAE 測試就挺夠用了啊
滿分是100

污損 CD-R ?? / 用 Burst Mode ??
我好像都不會這麼做耶 ^^;;

有人玩過了嗎? :)
有機會我也會來試試看 ^^||